Beta 0.1.1

Version notes:

• Added: Buttons to add/remove columns and rows in layout windows
• Added: "Select all references" context menu item
  • Fixed: Unable to remove/edit sprites from OAM Animation windows and PPU Frame windows
  • Remove with Backspace or Delete key, or via contextual menu
• Edit with double click or via contextual menu
• Fixed: "Undo pixel edits" menu item not working for multi selections
• Fixed: Showing empty contextual menus in a couple scenarios
• Improved: addresses.to is now optional in romPatches array (it's calculated)
• Improved: Render performance for static and animated tile windows (cached canvas)
• Improved: Refactor (file splitting) of some very large files