3.6.1:  Another tweak to how we add items to map:

        * Move required shotgun from MAP01 to MAP02

	With seed 1FreeDoom1 and default settings, this *only*
	affects MAP02 (it now has what I see as an improved layout)
	with seed 2FreeDoom1 and default settings, this gives us the 
	previous MAP01, except the old super shutgun is now a chainsaw. 
	(2020-04-14)

3.6.0:  Tweak how we add items to MAP01, MAP31, and MAP32:

        * We no longer add items which are already present on the map
        * We always add a chainsaw to MAP01
        * If there already is a backpack in MAP01, we add a chaingun
	  (a chaingun is usually not a quest object)
	* If there already is a backpack in MAP31, we add a rocket 
	  launcher of not present
	* If there already is a shotgun in MAP31, we add a chainsaw
	  if not present

	With the seed "1FreeDoom1", this only alters the layout of
	MAP31 (MAP01 replaces the second shotgun with a chainsaw)

	To save space, unused Wolfenstein 3D and Hexen has been removed;
	Heretic and Doom 1 code is still present, if unused.

        Tweaked Deathmatch goody placement code to minimize changes
        to DOOM2.WAD (2020-04-14)

3.5.2:  Update title picture in DOOM2.WAD

3.5.1:  Remove commented out code blocks to save space and clean up code.

3.5.0:  Bugfix-only update:

        * Fix bug where the cage in the MAP08 Red Key room was not tall
	  enough for the monsters at easy difficulty.  This change affects
	  MAP08, MAP18, and MAP29
	* Fix issue with SS soldiers being present in MAP30.  This only
	  affects MAP30
	* Improve the graphics in the title screen

3.4.0:  After 10 revisions, it’s time to update the minor number.
        Four older .MID files have issues when being converted in to
	.MUS files, so undoing conversion; only the new files get
	converted (MAP11, MAP14, MAP20, and MAP23 are .MID files 
	again)

        I also fixed a typo in this changelog for version 3.3.3
        (I put MAP03, I meant MAP08)

3.3.9:  Convert all .MID music files in DOOM2.WAD in to .MUS files,
        except for the MAP09 and MAP21 .MID files, which can not be
        converted without being corrupted.  This solves two issues:

        * Some of the .MID files would not always correctly start in
          Doomsday 1.8.6 (the .MID files which can not be converted in
          to .MUS have never had issues starting up)
        * The converted .MUS files now seamlessly loop

3.3.8:  Replace MAP25 music with newer FreeDoom MAP01 music (silence problem)
        Replace MAP15 music with newer FreeDoom MAP15 (more upbeat song)

3.3.7:  MAP26 *also* had silence problems with music.  Using MAP06 theme.

3.3.6:  MAP22 had silence at end; just use new MAP08 theme there

3.3.5:  Fix issue with MAP21 silence by restoring old MAP08 theme;
        add drum + bass solo to remove silence.

3.3.4:  Fix issue with MAP09 silence by adding drum solo

3.3.3:  MAP28 had same issue with music as MAP08; fixed.

3.3.2:  Update DOOM2.WAD to fix two bugs:
          * Sprite ELECA rotated, which looked quite ugly
          * MAP08 music (D_DDTBLU) had long silence; replaced
        In both cases, I updated the files with assets from FreeDoom 0.12.1

3.3.1:  Added “credits” screen (doesn’t have credits, but is here so 
        Doomsday doesn’t show a white screen any more) and made demos 
	work with megawad.

3.3.0:  Updated deathmatch maps to reduce flicker problems, and to give
        all players the "starting weapon" if chosen when making a map.
        Updated title screen; remove randomly generated MAP13 and MAP14.
        Now the only randomly generated map is MAP12 (and, the only
        non-placeholder maps are MAP01, MAP02, MAP12, and MAP30).

3.2.2:  Bugfix: Always place deathmatch goodies in the same places, even 
        when making a second (or later) megawad during a given ObHack 
        session.

3.2.1:  Bugfix: Sometimes, a megawad would fail to build.  Fixed.

3.2.0:  Bugfix update: MAP27 had an issue with an ugly wall in the middle of 
        the outdoors.  We now check for that bug and rebuild a map which has
        it (only MAP27 with the seed "1FreeDoom1" is affected).  I also 
        fixed a bug where a prefab did not have a minimum height, resulting
        in monsters going through the ceiling, affecting MAP28.  Only MAP27 
        and MAP28 are affected when played in single player mode; MAP29 and 
        MAP30 are slightly different, but only in deathmatch mode (if even
        that).

3.1.0:	Updated ObHack to have more firepower in deathmatch mode when making
	“single player” maps.  The maps are completely unchanged in single
	player mode.  Added new “Carnage” mode; removed broken support for
	Capture the Flag (CTF) maps.  Removed support for untested games;
	the only supported games in this version are Doom 2 and FreeDoom.
	Updated MAP12, MAP13, and MAP14 in DOOM2.WAD to have this improved
	deathmatch experience (single player, again, is completely the 
	same).

3.0.0:  Updated ObHack and map builder to be (mostly) deterministic:  If 
        one runs ObHack twice with the same parameters, and either the seeds
	"1FreeDoom1" or "2FreeDoom1", one will get the same maps
	generated.  This means we no longer use the old 2009 map designs 
	at all; we instead make new maps.  Note that not every map will be
	exactly the same, but it would take too much time to make this code
	100% deterministic.

2.0.0:  Update map builder to be consistent, while preserving legacy level
        designs.  This changes how the maps look (albeit with the same
        overall design), so DOOM2.WAD updated.

1.0.0:  Level 1 of Doom2 wads now always has backpack and super shotgun

0.7:	ObHack-FreeDoom updated to use FreeDoom 0.7

0.7.1:	Updated title screen, zombieman, and shotgun guy graphics

0.7.2:	Updated SMITA0 (tree with foliage) to use Sergeant_Mark_IV's version

0.7.3:	Updated music

0.7.4:  Updated Imp (TROO*) and episode 2 city sky (RSKY2); reduced unique
        map count to nine to save compressed space.

0.7.5:  

* Waterfall texture in fountains fixed to use ObHack texture
* ObHack markers now use pictures I took of a fire last year
* Verified that the Imp is latest version of Raymoohawk's serpentide
* Update MAP12 music (D_THEDA2) to use scragadelic/reflection_scrag.mid
  (DM10 music in FreeDoom)

0.7.6 (2018-08-28):

* Update MAP12 music to use old 2009 D_THEDA2 soundtrack.

0.7.7 (2018-09-19):

* We now only have three random maps in the megawad, use three FreeDoom
  maps, and have Watermark.wad to make the Watermarks less obnoxious.

0.7.8 (2018-09-23):

* Map03 crashes in Deng 1.8.6 at UltraViolence difficulty.  This in mind,
  I have removed this map; also all maps except Map01, Map02, Map12, Map13,
  and Map14 are instant-exit dummy maps.

0.7.9 (2018-10-09):

* Made map30 a deathmatch map with monsters, as per the discussion at
  https://www.doomworld.com/forum/topic/90524-rework-in-freedm-maps/

