Update version to 1.0.6-dev
Show color hex code in status bar (fix #508)
Don't expand MenuBar items on mouseover (fix #501)

This is how menu-bars work on Windows and OS X.
Fix #505 - Brush leaves artifact pixels everywhere
Add ReverseFramesCommand (fix #503)
Merge branch '1.0'
Add option to enable/disable automatic menu bar items popup (related to issue #501)
Add Cmd+, and Ctrl+K keyboard shortcuts to open preferences
Fix #472 - Undo and redo change the size of spray tool
Arrow keys move the selection only when the current tool/ink is about selection

This fix a problem where arrow keys cleared the selection content when they
were used with a non-selection tool.
Remove unused variables
Add experimental option to flash the selected layer when Up/down array keys are used (fix #111)
Merge branch '1.0'
Add dependency with pixman library
Minor changes in resize_image_tests()
Add TLS support to pixman for Unix-like systems
Fix crash in Editor::drawOneSpriteUnclippedRect() if a temporary surface cannot be created (fix #413)
Add Alt+Shift+G shortcut to toogle the pixel grid visibility (fix #504)
Add "View > Show Pixel Grid" menu option to switch the pixel grid
Fix region_tests compilation (as now it depends on pixman library)