Unbind the global backspace trap when changing color for an object
Fix switching from normal to select tool so events on fill objects don't get re-bound
Moving stuff around
Make it possible to update the color of a fill object
Fix selecting a fill and then deselecting so backtrace trap is re-bound
Hide the color field for a fill when it's deleted
Add a way to set the background of the fill layer
Fix setting color of background and fills to support rgba(...) and hsla(...)
Change COLORS from a heredoc to an array so vim doesn't barf on syntax highlighting
Don't onion-skin the layers, just hide the tiles layer when fill is selected
Ensure selected fills are unselected when switching to a different layer
Rearrange some things
Refactor tiles and fills code to use same as they are both map objects
Update dependencies