All

• remove UI filtering option
• update BBC display filtering immediately
• move BBC filtering option into main options dialog
• improve Mode 7 appearance

Windows

• fix D3D9 UI rendering, hopefully in all cases
• remove UI half-pixel offset option, now that the UI rendering is hopefully fixed...
• fix D3D11 rendering

OS X

• fix unknown short option: -p error
• save settings when quitting using Quit from the OS X menu bar