more UI improvements
added tool settings
fix focus bugs
colour picker tweak
fixed pixel grid
some UI fixes/improvements
Paint.JAVA -> Spade
clean up command line args and fix minor bug in mergelayer
organise gui package
added visibility toggle for layers
cleanup menus & shortcuts, add a bit of support for error handling
more error handling
first changes to effect dialogs
fixed IOUtils.relativeFrom()
Finish transition to Spade
minor readme fix
updated screenshot
add helper function to MaskMode
Added new smoother zoom icons.
Added an icon for the pencil tool.