ZDoom language configurations update:
- Added CanRaise and Slow actor state keywords/flags.
- Added SlowMonsters skill definitions property, and a missing NightmareFast gameinfo definitions property.
Merge pull request #159 from Blue-Shadow/master

ZDoom language configurations update:
Add ability for NumberTextCtrl to accept decimal numbers
Make OGLCanvas refresh timer settable
Fixes/improvements to LinePropsPanel

- Save sector tag correctly
- Implement 'New Tag' button
- Add line id field (for UDMF)
- Use NumberTextCtrl for number text boxes
Add custom properties dialog for things
Merge branch 'master' of https://github.com/sirjuddington/SLADE.git
ZDoom language configurations update
- Added STYLE_Shadow and STYLE_Subtract constants to ACS.
Merge pull request #161 from Blue-Shadow/master

ZDoom language configurations update
Merge branch 'master' of https://github.com/sirjuddington/SLADE into osx

Fixed non-SFML OGLCanvas compilation