6 Highlights (Scroll down for all changes)

Share To Web
Support viewing shared prototypes on Android, Windows, Linux, macOS and iOS
Shared prototypes include font information so fonts always look correct
Import Notes - see why a layer was flattened on import
Export interactive page - get a standalone HTML file of your design for hosting on your own server or sending to others
New export menu: Share to Web, Export Interactive Page, Images, Record Video, Record Gif
Updated Property Inspector UI
Added "Set as Home Artboard" Button to easily change where prototype starts
Artboard names added above each artboard in the editor
Refreshed all icons
Significantly faster video export
You can now export audio in recordings
Principle can now be launched with urls like so: principle://mywebsite.com/design.prd

6.39

Support importing from Sketch 2025

6.38

Support importing from Sketch 102
Fix import of Sketch layers with a shadow spread greater than zero

6.37

Account for Figma OAuth changes taking effect Feburary 24, 2025

6.36

Fix mispositioned layers in files imported from Figma files with sections

6.35

Support importing Figma frames located inside sections

6.34

Share to web links never expire, as long as license has been renewed within the last year
Reduce how often you need to sign back into figma
Fix crash in documents with Drivers
Fix small fonts looking vertically misaligned

6.33

Fixed crash triggered during recording export

6.32

Improved performance for documents containing many videos

6.31

Support importing from Sketch 97

6.30

Support importing from Sketch 96

6.29.6

Fix layers not being drawn behind groups with opacity
Fix graphics glitch with shadows

6.29.5

Fix clipping and opacity of components
Properly handle 'Z + click' to zoom on international keyboard layouts

6.29.4

Fix playback of videos with transparency

6.29.3

Improved performance when adding or removing layers from a group with many layers
Animations of type "No Animation" now show a duration of 0 in the timeline
Fix dragged layers getting offset from drag position in rare cases
Fix nested shadows or opacity groups looking wrong in preview
Fix preview window behaviour

6.29.2

Fix the preview window when editing a component
Fix a crash

6.29.1

Fix a crash

6.29

You can now export audio in recordings
pressing tab now cycles selection between artboards
Principle can now be launched with urls like so: principle://mywebsite.com/design.prd
Improved preview window performance of video layers
Improved preview window performance of layers with clipping
Improved preview window performance for artboards with many layers
Fixed some videos being incorrectly rotated in recording export
Improved memory usage when importing from Figma
Faster export of recordings with video layers

6.28

Update artbaord size presets with latest devices
zooming into the driver panel allows placing keyframes more precisely
Show touch down cursor in recordings
Fix several bugs with layer list
Fix weird mouse behaviour on macOS Ventura
Fix some crashes
Fix a graphics glitch on some graphics cards

6.27

Allow components to animate when scrubbing the timeline

6.26

Fix some transitions taking 0.3 seconds even when all its animations are shorter

6.25

Fix text layers not being visible in preview
Fix crash when scrubbing animation
Various other fixes

6.24

Fix graphics glitches
Fix crashes

6.23

Fix text colors in preview not matching editor
Fix animations with under and over shoot not animating correctly

6.22

Miscellaneous fixes

6.21

Fix animation timeline scrubbing
Fix several crashes

6.20

Significantly faster video export
Exported ProRes videos are now tagged as containing premultiplied-alpha
Fixes pixelation when layer animated from a large size to a small size
Fixes text decorators getting cut off – like the umlaut, for example
Fixed Figma import failure when there are layers with no vectors
Import Figma layers with smoothed rounded corners correctly
Import Figma layers with mixed stroke weights correctly
Opening files with many images is now faster
Animation preview works more consistently after making an edit with the mouse

6.19

Fix auto layout layers being mispositioned when imported from Figma
Update "Export Local HTML file" to latest version

6.18

Fix artboard name in dark mode
Fix imported Figma layers being duplicates of each other
Fix Figma layer clipping with multiple corner radii

6.17

Fix frozen scroll position

6.16

Show which Figma account Principle will import from
Show a log when Figma import fails (For details when Figma's servers are failing)
Fix export to ProRes on Apple Silicon
Fix components sometimes not appearing exported images
Fix layers flashing in exported HTML
Fix scroll wheel events in exported HTML
Fix rendering glitches for specific fonts in exported HTML
Fix emoji on retina screens in exported HTML
Export higher resolution emojis when sharing to web or exporting HTML

6.15

Fix importing from Figma
Fix mispositioned layers imported from Figma

6.14

Fix a crash when opening files that contain an audio layer

6.13

Make Figma import much faster for some types of Figma Documents

6.12

Fix import of rounded corners from Figma
Fix a hang when scrubbing an animation timeline that contains a video

6.11

View a list of all your shared versions
Get an HTML embed code for a shared-to-web version
Delete previously shared-to-web prototype
Update an existing shared-to-web prototype with the current document
animating panel now always displays start and duration timings
Fixed a freeze when opening prototypes with lots of video layers
Fixed an issue preventing Principle from registering a license key on certain hardware

6.10

Support importing from Sketch 73
Hover events can now get triggered when dragging or scrolling. You can make drag and drop interactions!
Fixed an issue causing rotated Sketch layers to be imported at the wrong position

6.9

Faster video export for prototyoes with multiple videos
Re-added "Export Mac App" to File -> Export Menu
Various performance and issue fixes for exported Interactive Pages

6.8

Fix glitchy colors in exported gifs
More performance improvements to gif export

6.7

Speed up video export
Speed up gif export

6.6

The standalone viewer is now up to date with all the performance and issue fixes that share to web has
Fix Figma layers importing at the wrong position when using Figma Autolayout

6.5

Added all export options to the File -> Export Menu
Fix video and gif exports having cut off layers
Fix video and gif exports getting padded with they shouldn't

6.4

Artboard names added above each artboard in the editor
Renamed "Export to HTML" to "Export Standalone Viewer"
Add alert letting you know that recording is stopped when you rewind the prototype
Fixed issue causing layers to sometimes be missing in video export
Many improvements for the standalone viewer
Remove gif FPS picker - always 60 FPS now

6.3

Increased video bit rate for Share to Web and Export to HTML
Fixed components with auto events getting touches when they shouldn't in Share to Web
Fixed single-keyframe drivers in Share to Web
Fixed video stuttering in Share to Web
Fixed undo when editing a text layer's text
Fixed some characters somtimes not having the right font in Share to Web
Fixed a crash caused when toolbar was not large enough to fit all items

6.2

Added "Set as Home Artboard" Button to easily change where prototype starts
Fixed an issue causing video layers to sometimes export rotated
Fixed Principle file size not getting smaller even after deleting components
Changing a video layer's video file no longer changes its playing/paused or frozen media time state

6.0

Share To Web
Support viewing shared prototypes on Android, Windows, Linux, macOS and iOS
Shared prototypes include font information so fonts always look correct
Import Notes - see why a layer was flattened on import
Export standalone viewer - standalone HTML file of your design for hosting on your own server or sending to others
New export menu: Share to Web, Export Standalone Viewer, Images, Record Video, Record Gif
Updated Property Inspector UI
Refreshed all icons
Fixed Figma Layers with Opacity importing incorrectly
Fixed long layer names looking bad in the Driver and Animate panels

5.14

Fix layer names getting cut short in the layer list

5.13

Support for Apple Silicon Macs
Support for MacOS Big Sur
Updated device size presets
Fix an issue with the layer list scrolling to the wrong layer

5.12

Attitional fixes for Sketch 66 import
Fix Sketch import crashes when importing old documents
Fix issue causing imported Sketch layers to have the wrong opacity

5.11

Support import from Sketch 66
Fix situations where certain Figma documents wouldn't import

5.10

Fix issue causing radius animations to not complete
Fix issue causing radius animations with spring easing to not animate correctly
Notarize Principle for Catalina

5.9

Fixes a crash in macOS Catalina Beta
Use macOS Catalina's new color picker to avoid a privacy popup

5.8

Fixes a problem causing Principle to ignore which Sketch document you selected in the import dropdown.

5.7

Fixes a problem causing Principle to sometimes require license key re-entry

5.6

Redesigned the send message to component UI
You can now route events to existing messages in a component or parent
Holding Z and clicking on the canvas will now zoom toward the cursor's location
Added Instagram export preset
Added keyboard shortcuts to toggle driver and animate panels
The connected Figma account is now shown in the import dialog

5.4

Fix import of Sketch layers with multiple fills
Fix look of animation timeline in dark mode
Support for new license manager

5.3

Fix some Sketch layers importing as rectangles when they shouldn't
Pause the preview on rewind
Prevent the preview from playing when the export dialog appears
Fix preview size not being restored when going back to parent.
Use Sketch layer name when dragging a layer in from Sketch

5.2

Fix auto events sometimes not firing
Attached Preview window now always perfectly fits your design's aspect ratio (For Zach)
Reworked Figma import to better support large designs and handle Figma errors
Fix a problem preventing some layer types from being imported from Sketch
Preview window will no longer stop your animation when the mouse leaves
Transitions now run much smoother in the preview window
Text can now be pasted into Principle
Updated device size presets

5.1

Fix hidden strokes and fills being imported from Figma as visible.
Fix the curve editor look in dark mode
Fixed Sketch and Figma layers with “principle flatten” not always being importened flattened

5

Dark mode in macOS Mojave
Import designs from Figma
New import UI
Import Sketch documents that are fullscreen
Added dropdown to select the Sketch document
Redesigned media button to make it clear you can click it
Exporting a video from a retina mac will default to 200%
Add “principle flatten” to a layer name to import it as a rasterized image
Add “principle skip” to a layer name to not import it

4.7

Improved Support for Sketch 52

4.6

Support for Sketch 52
Fix the preview window not being resizable on secondary monitors

4.5

Fix animations with zero duration ignoring their delay and happening instantly

4.4

Show radius property in the animation panel in more situations
Space out artboards for layers that only have a stroke
Fix crash when exporting a design that has an audio layer
Fix crash when closing Principle document

4.3

Video and Gif export is now about 16 times faster for certain types of files
Fixes the last/only line of text not appearing in exported video if the layer height is too short

4.2

Tweaked export settings for "video" option to improve quality and color accuracy. (Still, Go with ProRes if you're going for quality)
Fixed Artboards not making space for off-artboard layers
Fixed fix a crash in gif export

4.1

Fixed Event popup sticking around
Fixed some big honkin' memory leaks

4.0

Rewritten Video & Gif Export

Export high quality recordings in Apple ProRes 4444
Apple ProRes 4444 exports support transparency
Gifs now support transparency
Exported Gif files are much smaller
Resolution of exported video can now be set, just like gifs
Exported Gif frame rate can be changed to save file size
The cursor in recordings is now correctly sized relative to the prototype
Cursor can be changed after recording is made
Export recordings that are larger than your monitor
Preview window no longer goes fullscreen when recording starts
Export multiple versions of the same recording
There is no longer a delay between clicking record and the recording starting
Exported video and gif colors are more accurate
Improved color palette generation for gifs
Fixed issue causing 1 pixel edges to appear in recorded videos and gifs
Fixed issue causing cursor to be incorrect in recording

Video and Audio Layers

Set volume
Set start time
Pause video
Control time with drivers
Control volume with drivers

Animation

Hold shift to run the preview in slow motion
Hovering over the animation panel scrubs through the animation
Create and save custom curve and spring presets

Event Creation

Redesigned Event Popup
Events can be created just by clicking the event type, instead of dragging
You can now scroll and zoom while adding an event
Auto-scroll in the send-to-parent popup is faster

Performance

Crazy performance improvements for prototypes that use large images
Fixed Playback hangs when animating to a new artboard that has large images on it
Improved performance when exporting selection to images
Improved startup times for prototypes with lots of images

General Improvements

The Preview highlights interactive layers when you tap on a non-interactive layer
New insert button that allows you to add a rectangle, circle, rounded rectangle, text, or an artboard
New toolbar icons
Layer opacity can be set with keyboard number keys
New layers are positioned & sized with the mouse
Tab and shift+tab move between layers when renaming
Hold cmd+option to drag a layer even if it is covered by other layers
Button added to editor to bring detached preview window forward
When nothing is selected, select all will select artboards.
Text layers are more intelligently sized to fit after changes are made
Exported files are given better unique names
Pressing enter to select children is improved when multiple layers are selected
Fixed corner radius looking bad during some animations
Better importing of rasterized layers with shadows from sketch
Delayed text layer animations now animate the width properly
Improved selection tabbing when multiple layers are selected
Black and white pattern added on media button to show transparency
Layer names with unprintable characters will no longer cause sketch import to fail
Fixed an issue causing top level auto events to prevent auto events within components from working
Fixed an issue causing Sketch import to remove layers it shouldn't

3.11

Support Sketch 51

3.10

Fix an issue preventing drags from continuing after a transition
Fix draggable components becoming undraggable after transitioning to another artboard
Fix x/y drivers not working in certain situations
Fix hover events sometimes not working on components
Fix unrelated artboards changing when importing from Sketch
Fix layers disappearing when importing from Sketch
Improve handling of preview window when editor is fullscreen
Unprintable characters in Sketch layer names no longer cause import to fail
Congrats you read the whole change log. Big update in the works

3.9

Support Sketch 50
Import failures now output a log file to your desktop that you can send us

3.8

Support Sketch 49

3.7

Fix grouping issue

3.6

Fix a crash when importing from Sketch

3.5

Quicklook performance is much faster
Prevent layer sizes from going negative
Ensures artboards imported from sketch have unique names
Fix a layer list reordering issue
Fix an issue causing text layers to disappear after editing
Fix a crash occurring when resizing a layer
Fix a crash triggered when opening the Insert>Component menu

3.4

Improve touch handling when multiple gestures interact
Fix an issue causing some Sketch groups to import with a boarder
Fix an issue causing some Sketch layers to import at fractional pixels
Fix an issue in High Sierra causing preview window to be mispositioned

3.3

Added iPhone X preset
Add a drag hint to the event popup
Added keyboard shortcut for "Enter Full Screen" menu item
Clicking 2 or more times will continuously select the next deepest layer
Fix an issue causing multiple events to get triggered from a single gesture
Fix Sketch text layers occasionally getting imported at half pixels
Fix hidden layers in a Sketch symbol getting imported
Fix certain Sketch layers getting imported with an incorrect border

3.2

Improve performance when editor enters and exits a component
Fix an issue causing animating components to change their position
Fix an issue that made the send to parent popover to disappear before your mouse could get to it
Improve import of sketch symbols with overrides

3.1

Fix an issue preventing very old Principle files from opening
Fix an issue that reset scroll offset to zero in the playback view
Improved import of fixed width text layers from Sketch
Fixed issue causing Sketch's blurred layers to import at the wrong size
Fix crashes

3.0

Components can send events to parent
Send events to a component
Lockable layers
Drivers can now drive fill color, stroke color, and shadow color
Editing an animation plays it in the preview
Added option to import only the selected artboards from Sketch
Support for Sketch overrides
Added "touchable" option to make overlay layers
Export Images of Selected Layers added to the File Menu
"Select layer" added to canvas' context menu
Improved animation UI for layer names that don't exist on both artboards.
Sketch reimport maintains Principle/Sketch layer ordering
Sketch reimport maintains scroll settings
Add import support for flipped layers in Sketch
Components can be inserted from the insert menu
Resize components better when component's artboard size changes.
Improved Sketch import of blurred layers
Clicking event popup shows hint that you need to drag
Improved cmd-click and double-click layer selection
New layers are given a random color
Color picker defaults focus to the hex field for quick copy and paste of hex values
Ungrouping will select the newly ungrouped layers
Copying and pasting a layer will also copy and paste the events on it
Principle will pan to the selected layer if it is out of view
Rewinding preview restarts video layers
Improved copy/paste performance
Events arrows are more tightly packed
When the stroke color is changed, stroke width will be set to 1 if it is 0
Changing font size will resize the text layer to fit.
Show that the animation and drivers operate on the center X and Y of a layer
Export for mac now exports to the current file's directory
Events are now created directly on components, instead of a group around the component
Alt+dragging a layer to a new artboard will keep its old name
Improved performance for files that use a lot of fonts
Smaller files sizes for files that use a lot of components
Resizing component's artboard better resizes all instances of the components
Fixed components sometimes pasting incorrectly
Fixed preview window shadow
Fixed preview window capturing keyboard events when mouse was over it
Fixed playback bugs relating to components
Fixed a bug that misplaced recently-detached components
Fixed bug causing preview window to disappear when dragged to secondary monitor
Fixed a bug that showed animating layers even when all animations were turned off in a transition
Fixed bug causing the preview window to show shadows with double the radius it should have
Fixed a bug that allowed adding layers incorrectly to component instances
Fixed a bug that didn't restart auto animations when the preview was rewound
Fixed a bug causing inspector field stepper buttons to resize incorrectly
Fixed a bug that created multiple copies of a layer dragged in from Sketch
Fixed a bug causing Principle to use component artboard size for new files
Fixed Sketch import failing when the Sketch file was corrupted
Fix a crash when zooming in really far in the canvas
Fix bug that occasionally caused canvas to pan after box selecting

2.1.7

Fix symbol-related import failure from Sketch 45

2.1.6

Support importing from Sketch 45

2.1.5

Support importing from Sketch 44
Fix a bug causing alignment controls to get disabled
Fix a bug that could make it difficult to make animation curve popup appear

2.1.4

Fix a few Rare crashes

2.1.3

Fix a bug causing dragged in Principle files to become layers instead of components

2.1.2

Mirroring performance improvements
Fix bug preventing animation and driver panels from remembering their height
Fix a bug on 10.11 causing the preview toolbar to disappear when docking the preview window
Fixed crash when editing or undo edits on components
Fixed crash when entering an invalid number value in the inspector
Fix bug in which driver keyframes wouldn't get added after making an edit
Principle will be less annoying about letting you know there is a new version
Made it easier to rearrange layers in the layer list without accidentally adding them to a group
Undoing create component now correctly restores the layer's original positions
Improved import compatibility with Sketch 42 layers with multiple radiuses

2.1.1

Support importing from Sketch 41
Fix a crash on OS X 10.11

2.1

Freezable component state
Preview Toolbar hides when preview is fullscreen
Driver and animation keyframes stack when they're on top of each other
Animation timeline can be zoomed
Artboards are automatically spaced out if you move a layer outside its artboard
Principle is smarter about where it places new and pasted layers on the canvas
Sketch artboards are now imported in the order they are positioned in Sketch's canvas.
Principle is smarter about what artboard size to use when importing from sketch when there are several artboard sizes
New artboards have the same background color as the current artboard
Resizing an artboard will resize all other artboards around the same origin
Performance improvements when previewing complicated designs
Duplicating and grouping layers results in better layer names
Accept drag and drop promises to support compatibility with Sketch 40
Fix an issue that occasionally prevented rewind from resetting preview
Fixed 0% opacity layers importing incorrectly from Sketch
Fixed "play once" for audio and video layers
Fixed color picker's hex field now showing the full hex value
Fixed an issue preventing stepper buttons from appearing in the color picker's RGB values
Fix an issue causing drivers and canvas to get out of sync when undoing
Fixed an issue that caused components to transition to their next artboard too soon when using spring animations
Fixed an issue that could make it difficult to select a layer
Fixed an issue that caused animation info on component instances to be reset when you edited the master component
Fixed an issue that caused components to ignore their animation settings
Fixed an issue causing long animations to continue playing after rewinding the preview window
Ensure only component is selected after clicking "back to parent"
Fixed a memory leak

2.0.6

Fix a crash when launching tutorials

2.0.5

Fix an issue causing the lightning button to disappear

2.0.4

Fix an issue causing canvas to display incorrectly
Fix an issue causing canvas to get out of sync with drivers after undoing

2.0.3

Fix a crash caused by opening corrupted files
Fix driver and animate panels on macOS 10.12
Fixed a bug that caused Preview window to get very small

2.0.2

Restart video layers when you rewind the preview
Fix a bug that cause long press events to get triggered during scrolling
Workaround Sketch bug causing imported layers to be missing
Workaround Sketch bug causing imported text layers to be super wide
Fix a crash caused by a bug in OSX 10.10
Fix crash triggered when opening corrupted files

2.0.1

Fix scrolling start/released/end events
Fix bug related to ungrouping components
Fix bug that would prevent events from fireing if you used auto events in a very specific way :)
Fix bug caused by detaching a component and then editing another component
Ensure layer names are unique after detaching a component

2.0

Components
Drag from lightning button to quickly create tap events
Number label for current driver value
Show a spinner until recording starts
Color picker applies some common sense to common color situations
Duplicating multiple artboards adds after the last selected artboard
Hide animation panel when editing unrelated artboards
Improved playback performance
fixed animation properties being mis-applied after selecting a keyframe

1.2.7

Fix another Sketch import bug related to symbols that have multiple nested groups.

1.2.6

Fix Sketch import when importing symbols that have a single group as their only sublayer
Workaround Sketch bug that caused import to fail if you created an artboard in Sketch 39

1.2.5

Fix Sketch import when importing from Sketch version 39
Fix Sketch import for files that have symbols with no layers in them

1.2.4

New artboards are created to the right of the current artboard
Show layer names that have identical properties in the animation panel
Reduce the number of driver rows that are shown due to frozen properties
Fix rendering of groups with negative size
Fix bug causing audio to not stop playing
Fix bug with video layers animating their size incorrectly
Fix bug that caused duplicate layers after importing from sketch a second time

1.2.3

Group multiple changes together before sending to Principle Mirror over USB
Improve shadow handling for layers with transparent images
Fix font size and color animations
Fix a rare crash caused by file corruption
Fun version number (1.2.3)

1.2.2

Fix clipping not animating properly
Fix bug causing videos to start over even if "media time" was frozen

1.2.1

Fix a crash when clicking the media button for certain types of images
Fix a crash on 10.10.5
Fix another crash that isn't easy to explain :)

1.2

Video Layers
Audio Layers
Drop shadow
Click the media button to change a layer's image / video / audio asset
Animate panel shows which layer names are not matched between artboards
Import Sketch 3.7 symbols' sublayers
Allow the media property of a layer to be frozen
Improved file open performance
Fix a bug that caused "null" events to get added to your design when pasting 2 or more artboards
Fix Sketch import bug that set layer opacity to 100%
Fix bug that caused Sketch Import to fail
Other bug fixes

1.1.2

Image layers look much nicer in the canvas when zoomed out
Check to ensure that Sketch 3.5 or later is running before trying to import
Sketch's background blur effect can now be imported
Sketch layers with non-pixel-aligned positions are now imported properly
Import's "Merging Sketch and Principle Assets" phase is much faster
Fix bug causing weird artboard animation for some people.
Fix bug preventing selection and resizing of layers that have non-zero scroll X / Y
Fix color mis-match after importing from Sketch
Fix some types of layers not being imported from Sketch properly
Fix bug that marked newly created document as needing to be saved
Added rewind shortcut (W) to viewers created with "Export for Mac"

1.1.1

Support importing from Sketch Beta
Fix bug that erroneously imported some Sketch layers with a rectangular border
Fix bug showing only the first event arrow of several between two artboards
Fix bug that prevented Principle from finding Sketch if it had been renamed
Fix import failure for Sketch documents with slice layers
Fix import bug that unnecessarily flattened some Sketch circle layers
Fix bug that imported Sketch layers with dashed borders incorrectly

1.1.0

Sketch Import
Asset replace (Drag new image onto inspector's image property)
Quicklook Principle files in Finder
Significantly smaller files for large projects, sometimes 85% smaller!
Touch cursor animates on mouse down
Copying and pasting two artboards pastes the events between them (makes it easy to merge multiple Principle designs)
Improved editing performance for large projects
Pasted images now appear at the top left of the artboard
Inspector fields are blank if multiple values exist.
Dragging inspector labels shifts across whole selection, instead of setting
Automatically enlarge preview window for recording.
Fix color picker on secondary monitors
Fix spring animation on scale properties
Fix bug that caused undoing delete to re-add layers in the wrong order
Fix bug in alignment feature
Fix editing of multiple spring animations at once
Fix bug in Export for Mac that caused OS X to say the app was corrupted
Fix bug causing end keyframe to move when dragging the start keyframe

1.0.0

Mouse Hover events
Driver panel can be zoomed
Multi-select keyframes in Drivers Panel
Scroll prototypes with the mouse scroll wheel or trackpad gestures
Preview cursor type is remembered across file opens
Hovering over a transition arrow highlights its layer
Selection handles are now hidden when nudging layers with arrow keys
Added box select to drivers panel
Clicking Layer names in drivers panel selects the layer
Clicking in the animation panel sidebar selects the associated layers
Dragging spring animations no longer overwrites the spring properties
Hold alt in artboard size preset dropdown to see landscape presets
Fix a bug causing the Preview window shadow to disappear
Spring animations show only their start keyframe, since physics determines end time
The inspector resizes much more nicely
Fixed sluggish scroll bounce-back
Updated keyframe icon to make it clear when keyframes are selected
Color picker will ignore "#" in the hex value field
Layer name no longer overlaps hide button in layer list
Ensure Canvas is pixel aligned at 100% zoom
Fixed bug that caused auto events to run at unexpected times
Fixed bug causing clicking on the canvas to zoom in on older computers
Fixed drag and drop not working for certain image types
Fixed crash on OS X 10.9
Lots of other little changes

0.0.81

New color picker
Pick color shortcut: Ctrl+C
Clicking record lets you hide the cursor, or use an arrow cursor
Gifs are now much smaller
File > Export Viewer: fixed bug that prevented interaction
Updated animation UI for Frozen properties
New Presets for iPad Pro, TV, Desktop and Web
Added an alert if recording will be smaller than design
Improved layer distribution algorithm
Event arrows unrelated to current artboard are dimmed
Allow tabbing between curve popup textfields
Fix bug preventing the preview from updating after deleting events or drivers
Improve memory handling during dragging
Fixed crash triggered when mirroring to iOS

0.0.80

Stroke properties
Manual spring animation settings
File->Export Viewer *In BETA*
Notify Principle Mirror when frontmost window changes
Animation curve selector is now inline with the keyframes
Auto scroll when dragging keyframes or a new event arrow
Added community and documentation entries to Help menu.
Added "Custom Size" to artboard size presets
Improved performance when mirroring designs with lots of image data
Improved gesture routing (For example: tap and long press on same layer)
Fix bug that caused undo/redo to insert driver keyframes
Fix bug that caused alignment buttons to not work, or be off-by-one
Fix bug preventing auto events from firing if a touch was held down
Fix bug that made selecting transitions impossible if a layer was behind it
Fixes several crashes

0.0.79

Drivers view can be scrolled with space+drag
Animation view can be scrolled with space+drag
Preview window can be made fullscreen
Zoom to mouse
Swipe down + alt and swipe down + cmd now zoom the way you’d expect
Prevent opacity field from going above 100% when multiple layers are selected
Fix bug causing layers with a grayscale color to become transparent
Fix layer list scrolling to first selected row when extending selection
Fix bug causing layers to appear in the wrong order in playback
Fix bug causing drivers to be applied to wrong layer
Fix bug that caused artboards to space out for clipped layers
Fix a recording crash triggered by colorsync
Crash on exceptions instead of continuing in bad state. (Let us know if it crashes!)

0.0.78

Animate scroll position when transitioning between artboards
Layers can now be dragged between artboards
Added Cmd+Arrow shortcut to resize layers
Added support for enter key on numpad
Update Principle Mirror text to reflect app store approval
Update visibility icons in layer list after scolling
Fix animation glitch caused by layers changing parents between artboards
Fix pasted/dragged in layers being added in the wrong order
Fix bug that added keyframes to drivers when scrubbing
Fix bug that prevented gif exports from being canceled
Fix crash related to OSX 10.10
Fix crash related to connecting and disconnecting USB devices

0.0.77

Gif size export options
Gif export progress UI
Show video or gif in Finder after export
Rows related to selection are highlighted in the Drivers and Animate panels
Record button starts blinking once the recording actually starts.
Fix bug that caused artboard contents to overlap under special curcumstances
Fix curve popup clear background when "reduce transparency" is turned on.
Fix bug that caused scrubbing a driver to drag keyframes
Fix right-Cmd not working
Fix bug that prevented keyframes from being added properly to a driver
Improved trial-end experience

0.0.76

Fix video recording being scale down a bit and producing blurry files
Driver view can be scrolled vertically
Fix layer renaming bug in OSX 10.11
Added rename shortcut: Cmd+R
Toggle visibility shortcut Cmd+Shift+H
Shortcut for video recording: Ctrl+V
Shortcut for video recording with hidden cursor: ctrl+Alt+v
Prevent box select from selecting hidden layers
Fix preview window sticking around after the editor window was closed
Fix for international languages that use a comma instead of a point for decimal numbers
Fix bug that prevented layer list from updating after grouping
Fix beachball triggered by scrubbing in the driver panel
Duplicating a layer will make it appear directly above the original

0.0.75

Improve feedback back-end

0.0.74

Fix feedback not sending. Speak up folks!
Note: Let us know if you're having trouble renaming layers.

0.0.73

Let everyone know that Principle Mirror is still in app store review

0.0.72

Arrow keys can increment inspector text fields
Highlight the affected layer when hovering over driver and animation UI.
Keyframes are now automatically added to drivers
Improve performance when grouping, ungrounding, deleting and selecting many layers
Pixel align middle and center alignment controls
Pixel align resize around center now
Reversed Alt+Space+drag direction
Made keyframe snapping weaker
Snapping on canvas takes current zoom into account
Extend recording limit up to 15 minutes (up from 30 seconds)
Fix bug that caused layers in large documents to appear in the wrong order
Fix unresponsive UI on OSX 10.9
Fix bug that caused event button to not stay next to selected layer
Fix transition arrow text on retina screens
Fix reordering layers/artboard undo
Fix bug that deleted all links on an artboard after moving a layer between artboards via the layer list
Fix bug preventing box select in animation timeline