v4.3 - Changes and polish

-Made Space+B be the sticky buy
-Made Space+2 -> Space+9 be camera jump to control group
-Moved select all units and select all others to Alt+1 and Alt+2
-Auto-Select summoned units toggle was created on Alt+F4
-Quick/Normal cast mode toggle was moved from Alt+Space to F7
-F6 key now has Combat Log toggle
-Fixed an issue that prevented score screen from being hidden
-various other fixes
-hero custom mods now has sounds attached to them, for extra flavour