Remove magic number 64 from pick-color function
Remove some magic numbers related to the fill tool
Remove magic number related to line-drawing tool
Remove more magic numbers
Make sure zoom info doesn't jiggle when zooming in
Turn size indicator into drop-down, allowing user to change canvas dimensions
Ensure that preview canvas stays in sync with canvas dimensions
Ensure preview canvas is centered vertically and horizontally
Ensure that exporting animation doesn't break if canvas size changes over time
Make the Create New Canvas operation blow away the undo history
Update wording and icons for the New Canvas menu option
Bump version to 0.0.6a
Fix bug when pasting selection in non 64x64 canvas
Update preview image to match current version
Merge branch 'AllowOtherDocumentSizes'