Here's a list of changes:
Bugs fixed are:
- No more crashing about freeing a pointer without ZONEID when changing levels.
- Skies wider than 256 pixels are drawn correctly.
- Monsters' heights are once again the same as they were in id's original DOOM, so certain areas work properly again.
- Monsters shouldn't teleport into each other anymore.
- Improved support for international keyboards.
- The skill level chosen for a new game is no longer ignored if the new game is started while a demo is playing.
- No more "sv_gravity changed to...", "skill changed to...", etc. messages in single player games.
- Activating the player setup menu automatically stops any playing demos, since it doesn't work properly while they play.
- Barrels don't go flying away when exploding anymore.
- Added def_patch cvar to automatically load a DeHackEd patch each time the game is started.
- ZDoom save games now use the name zdoomsv?.dsg instead of doomsav?.dsg.
integrating some of the BOOM source code with ZDoom:
- Medusa fix.
- Openings limit removed.
- Removed limit on switches and animations.
- Added support for BOOM-like ANIMATED and SWITCHES lumps in PWADs.
- Added support for BOOM-style scrollers (including conveyors).
- Added partial deep-water support.