Bug Fixes:

• Fixed a bug where drawing with a selection on transparent pixels would come out incorrectly.
• Fixed a bug where the delete AppleScript command wasn't working.
• Fixed a bug where the rectangle selection cursor was showing up in the wrong location.
• Fixed a bug where writing out a WebP image via AppleScript or JSTalk would always make the background black instead of white.
• Fixed a bug where using the Edit ▸ Fill menu to fill a layer with an image would sometimes not fill the entire image.
• Fixed a bug where taking your hand off the shift key when moving multiple layers inside a group layer would cause some to be moved by 10x (with the shift key down) and others by 1x.
• Fixed a bug where a unique combination of clicking the "trim" option in the web export window while also setting a scale would cause your image to be scaled in an odd manner.
• Fixed a bug where setting the opacity for a group layer would incorrectly apply it to layers below it as well.
• Fixed a bug where the View ▸ Zoom in / out menu items wouldn't work on a new canvas view window.
• Fixed problem where a single click with the selection tools wouldn't clear the current selection.

New Stuff:

• The magic wand selection tool now has an option for contiguous or non-contiguous selections. In addition to this, if you use the magic wand tool on a shape layer with the contiguous option turned off, it effectively works as a "select all shapes with this fill color" tool. Which is pretty rad if you have a bunch of shapes that you want to change the colors on.
• New File ▸ Layer Export… menu item, which will export a single layer out of Acorn. In addition to this, if you have a shape layer that you want to export and it doesn't have any layer styles associated with it, a pure vector PDF will be written out.
• The contextual menu now has a copy of the Layer ▸ Shape Align and Size menu for working with selected shapes quickly.
• New layer blend modes: Divide, Lighter Color, Darker Color, Hard Mix, and Subtract.
• New Generator ▸ Sunburst filter, which lets you make some awesome backgrounds.

Changes:

• Guides are now drawn when you free rotate your canvas.
• In the Image Browser window (which you can open via File ▸ Open Folder… menu item), the little icons on either side of the zoom slider will now increase or decrease the zoom level of the preview images when clicked.
• The "Open Image in Acorn" service will now work with selected files when used from the Finder.
• If you're editing a file with Autosave + Versions turned on, and that file happens to be locked, Acorn will no longer warn you to duplicate it if you're only applying selections (which don't alter the image).
• Holding down the shift key while rotating when using the Layer ▸ Rotate and Transform ▸ Scale and Rotate menu item will snap the rotation to 45° increments.
• Increased the amount you can magnify an image with the zoom slider from 1000% to 2000%, which should help out Retina MBP owners. Pro tip: did you know you can click the little icons on either side of the slider to zoom in or out in a controlled fashion? And the zoom tool (shortcut key 'z') can zoom in even more than the slider!
• Remove FXG as an exportable image format, since Adobe seems to have abandoned it.
• Pressing the return or enter key on a shape layer no longer merges it down. Why did Acorn ever do this? I wish I knew, but it was on purpose.
• Slight change in behavior with Image ▸ Trim to Edges: If a bitmap layer has pixels outside the canvas bounds, they are no longer taken into account when trimming down the size of the image.
• Added a new property for JSTalk/JavaScript filters to show up in the Actions menu: set ACIsAction=true in the header section of your script.
• Updated the JSTalk/JavaScript plugin to work on Group layers.
• The "Plus Lighter" blend mode was renamed to "Linear Dodge", to more closely match other image editors.
• The "Plus Darker" blend mode was renamed to "Linear Burn", to more closely match other image editors.
• The blend modes were reordered to more closely match other image editors.

New Stuff for Scripters:

• Some new plugin APIS:
  A new method on CIImage: - (BOOL)writeToURL:(NSURL*)fileURL withUTI:(NSString*)uti
  A new method to implement for the ACPlugin protocol- (NSNumber*)validateForLayer:(id<ACLayer>)layer;
  A new method for finding the opaque bounds on layers: - (NSRect)opaqueBounds;
• You can also now mess with a layer mask with these new methods on ACLayer:
  - (void)setLayerMaskImage:(CIImage*)ciimage;
- (id <ACMaskLayer>)mask;
- (BOOL)maskIsLinked;
- (void)setMaskIsLinked:(BOOL)value;
• The plugin SDK has been moved to GitHub as well: https://github.com/ccgus/AcornSDK

Lots of Important Fixes:

• Fixed a bug where sometimes the extension for your filename would disappear in the save sheet.
• When using the various transform tools on a bitmap layer, the transform operation will now apply to the layer mask if it is linked.
• Fixed a bug where sometimes text boxes would not get their line heights correctly scaled when resizing an image.
• Fixed the little Purchase menu blip that you'd sometimes seen when starting up even though Acorn was registered already.
• Various fixes with the magic wand tool, including little speed improvements.
• Fixed a bug where you'd get interesting patterns in your selection in some cases with the magic wand tool.
• Fixed a bug where Acorn thought it would sometimes still have a selection when using the magic wand tool + intersection selection mode, where no intersection was produced.
• When exporting as PDF, Acorn will now create a document which respects the current DPI of the image.
• Fixed a bug with the Scale and Rotate transform tool, where you couldn't enter fractional values for the rotation field in the palette.
• Fixed a bug with the Add Border to Layer filter with Retina displays.
• Fixed a bug where zooming with the scroll wheel (hold down the option key for this!) would put the canvas in unexpected locations on retina displays.
• Fixed a bug where using the Scale And Rotate menu item on an even width/height image with a rotation of 180° would offset the image by 1 pixel.
• Fixed a bug where using the Edit ▸ Fill menu item to fill your image with a pattern would blur the pattern image.
• Fixed a bug in Web Export where the Save button wasn't enabled right away if you switched from saving as a PNG to a JPEG while the PNG was still being processed.
• Fixed a bug where the File ▸ Add Images… menu item would let you select a PDF, but wouldn't actually import it as a new layer to the image.
• Using the tab key to change fields in the Acorn Automator Crop Image Action (say it five times fast!) will no take you to the next field.
• Fixed a bug where sometimes flipping a layer vertical or horizontal would trim out some of the pixels.
• Fixed a bug where the trim bounds of a shape layer was sometimes wrong with multiple shapes.
• Various Retina display fixes with layered screenshots and zoom to fit, among other miscellaneous things.
• Fixed a bug where the file extension would not change correctly when changing the filetype in the Export sheet.
• Fixed a bug where Acorn would crash when making a new document if there was bad data on the clipboard.
• When duplicating a document, Acorn will notice if the rulers are showing and turn them on for the duplicated document if needed.
• Fixed a bug where Acorn wasn't auto-registering from MAS versions of Acorn that were sandboxed.
• Fixed a bug with the "New Image with Curved Drop Shadow" plugin on Retina MacBook Pros.
• Fixed a bug with Trim to Edges, where sometimes the canvas would grow if a layer extended outside the bounds of the canvas.
• Fixed a crasher when web exporting a completely transparent image with the trim and matte buttons checked.

New Stuff:
• Retina Canvas- Your images look absolutely beautiful on the new Retina MacBook Pros with a a 1 to 1 pixel mapping from the image to the screen. Hello super awesome high resolution!
• Trim out Selection! If you have a fully vertical or horizontal selection, holding down the option key will turn the Image ▸ Trim to Edges menu item into "Trim out Selection" which will slice out the current selection and squish the two endpoints of your image together (bitmap layers only).
• Smart Layer Export! Its like slices, but smarter.
• You can now convert the current selection into a layer mask just by invoking the Layer ▸ Add Layer Mask menu item when your selection is active. Rad.
• Awesome new feature- Reselect! The Select ▸ Reselect menu item will now remember whatever the last selection for your image was. So you can make up some fancy selection, clear it, and then use it again later on.
• New shortcuts for making selections from layers. Holding down the command key while clicking on a layer in the layers list has made a selection based off using the layer image as a mask. Now if you hold command + the shift key, the new mask will be added to an existing selection, command + option will subtract, and command + shift + option will intersect.
• In the resize canvas sheet, you can now use Command 1 through 9 on the number keypad to choose an anchor for the image. Command-1 corresponds to the lower left, Command-9 is the top right, Command-5 is in the middle, etc.
• New iPad presets in the new document window.
• Subtraction and intersection selection modes now works for the magic wand tool.
• The text system got a little makeover so rendering more closely matches what you see when editing a text box.
• You can now close open paths using the Layer ▸ Shape Align and Size ▸ Close Path menu item.
• Command-control-- can now be used as a shortcut to delete the selected layer style in the layer style palette.
• New contextual menu for selected shape layers for Send to Back / Bring to Front.
• The Web Export window now has a scaling option. The AppleScript and JSTalk interfaces have also been updated to take width and height properties.

Notes for the App Store version of Acorn which is now sandboxed:
• The magic Acorn uses to automatically change the file type popup as you type in the Save sheet no longer works, for your security.
• Using JSTalk to open up images that have not been recently opened will fail.

Fixes:
• Fixed a bug where selecting a shape close to a snap point would cause it to move, even if you hadn't moved the mouse after selecting it.
• Fixed a bug in the image resize sheet where certain calculations of the canvas size were off by 1.
• Fixed a bug where the Posterize Quartz Composition wouldn't show a good UI for setting its levels.
• Fixed a bug where the layers list would lose the current selection when using its contextual item to delete a layer which wasn't currently selected
• Fixed a bug where scaling an image with bezier paths wouldn't scale the path's stroke or gradient correctly.
• Fixed a bug where the Hue Adjust layer style would show your saved style in radians instead of degrees.
• Fixed a display issue with the ruler when you had units set to Centimeters.
• Fixed a bug where origins on bitmap layers sometimes reset to zero when changing the color profile of the image.
• If you've go the canvas origin set to the top left, then the canvas grid will correctly now set its origin to this point.
• Once again, if you've go the canvas origin set to the top left then the palette's entry for the bounds of a selected shape are calculated correctly.
• Fixed a bug where a PSD layer limit was incorrectly being applied to 10.6 users (Sorry guys! It was only supposed to hit folks on 10.7.0-10.7.3! If you're running 10.7.4 or later, you're also OK. If not- what are you waiting for?)
• The iPhone Retina preset now has the same aspect ration of the old gen iPhone preset.
• Fixed a bug where resizing an image with the Simple Affine scaling algorithm would sometimes show a transparent edge on the right side of the image.
• Shape selection behavior when zoomed way in is better.
• Fixed a bug where merging of the visible layers would cause the final layer to always be placed at the bottom of the layer stack.
• Fixed a bug where expanding the canvas to fit the layers with a selection would sometimes move the selection to the wrong spot.
• Fixed some problems when you were zoomed way in and moving bezier shapes around + snap to pixels turned on.
• Fixed a regression where switching between two images would cause Acorn to forget which layer was selected.
• The opacity slider for the inner shadow layer style now shows as a percentage instead of a decimal number.
• Fixed a bug where sometimes moving the very first element of a bezier curve would cause your endpoints to go a little nuts.
• Fixed a bug where using the magic wand on a layer with multiple selections and transparent areas would sometimes redraw the transparent areas making it more opaque. Which probably isn't what you wanted.
• Fixed a bug on the OS THAT SHALL NOT BE NAMED (10.8) where some JSTalk scripts would not work.
• Fixed a 10.7 bug where saving a document to a file that was already open in another window would cause Acorn to hang.
• Squashed a bug where starting a layered export to PNG and then canceling at just the right time would cause Acorn to beep at you on the next save.
• Fixed a bug where using the magic wand to add to a selection would sometimes shift the selection around.
• Fixed a bug where you could nudge the current crop marks outside the canvas when using the arrow keys (only when the crop was set to stay in the canvas).
• Copying a bitmap layer would sometimes cause changes from the original layer to show up on the copied layer. We have rectified this situation.
• Copy on shape layers no longer adds a border for the PDF representation.

Other interesting tidbits:
• Added a "New Shape Layer" menu item to the action menu of the Palette.
• Changed the "Zoom Tool" menu item to "Zoom" (under the View ▸ Tools menu), and renamed the Window ▸ Zoom menu item to "Zoom Window" (Pages does this as well, to avoid confusion with custom shortcuts).
• When transforming a selection, you can now use the arrow keys to move your selection around. Hold down the shift key to move 10x as fast!
• The trick to resize the brush tool (by holding down the control and option keys, click on the canvas, and moving the mouse back and forth) now works for the smudge, dodge, burn, and clone tools.
• If the brush or pencil tool is selected, pressing the '5' will set the opacity of the tool to 50%, '3' to 30%, and '0' to 100%. Previously this would change the opacity of the layer (which is still true when the move and other tools are selected).
• When trimming an image, the bounds for invisible layers will no longer be taken into account.
• If you start a selection and move the mouse outside the window and stop, Acorn would stop the selection even if you had more room to scroll around in. In 99% of the cases, this isn't what you wanted- so now Acorn will continue scrolling if you stop moving the mouse outside the window.
• Trying something new- previously if you managed to start creating a shape without a fill or stroke, Acorn would turn on the fill. In 3.3 we've changed that to turning on the stroke with a value of 1.
• Undo when moving vector shapes is quite a bit faster.
• Reworked the warning you get when trying to trim an image without any transparent edges. It is now 84% more accurate.
• The tool palette no longer goes transparent in full screen, because this was kind of annoying. You can use the Tab key to quickly toggle the tool palette's visibility.
• The shortcut to show and hide the grid now works when you're rotating the image.
• When merging visible layers, Acorn will combine all the images into a new layer - and now it'll use the name of the selected layer (assuming it's visible) for the new composited image.
• The layer styles fx symbol in the layers list now dims when layer styles are disabled.
• Various little speed improvements when layers styles are enabled.
• You can now remove a gradient stop-point by moving it off the edge of the preview either left or right, in addition to below as it's always been.
• Flipping a layer in place now keeps it within the layer's opaque bounds.
• When you have a group layer selected and you copy + paste to a new image- instead of a composite of all the images the whole group with layers preserved are pasted.
• You can now use the various selection tools on a hidden layer.
• If you have multiple points selected in a bezier path, pressing the delete key now removes all of them instead of the first one Acorn comes across.
• New API for plugin authors- the document class now implements firstLayerWithName:, which will return the first layer it finds with the given name.
• The formatters in the filter panels no longer use commas in the numbers because that got really annoying.
• Now signing with Developer ID, for your security.