Added "Toggle sky rendering" action and toolbar button.
Added, MAPINFO parser: the editor now recognizes map number from classic map definition format. Hexen MAPINFO is now properly parsed.
Added, MAPINFO support: if current map definition contains map name as a text string, it will be shown in the editor's header.
Changed: "Toggle dynamic lights rendering" now toggles between "Don't show dynamic lights" and "Show dynamic lights" when used in Classic modes.
Changed, Things mode: lowered the opacity of dynamic light radii.
Changed, (G)ZDoom text parsers: empty include files now trigger a warning instead of an error and no longer abort parsing.
Fixed, Game configurations: moved Stalagmite:5050 thing to Doom block (so the editor no longer tries to load it for non-Doom game configurations).
Fixed(?), Visual mode: probably fixed a hard-to-trigger exception when sorting translucent geometry.
Fixed, Visual mode: floor glow effect was incorrectly applied to walls (was broken in R2452).
Internal: restructured most of MAPINFO and GLDEFS parsers. Should be more maintainable now.
Updated ZDoom ACC.
Updated zdbsp to 1.19.
Updated documentation.
Changed, General interface: all main menu toolbars are now visible when starting the editor for the first time.
Changed, General interface: "Prefabs" and "Edit" menus are now hidden when no map is loaded.
Changed, General interface: moved "Dynamic Grid Size" menu item to the "Edit" menu, also moved the button to the matching position on the toolbar.
Changed, General interface: changed "Show Comments" menu item position in the "View" menu, also moved the button to the matching position on the toolbar.
Game configurations: removed "gamedetect" block, because it was unused by the editor.
Updated documentation ("Map Format Settings" page).
