edit: this might be out of date or buggy, need to check sometime
The main deal with this upload is that now you can add the tree, plant, skeleton, and other graphics seen in combatmaps, as decoration on the world map. This builds on and includes the work of the old Mapmaker Addition upload, which made surface terrain available in caves and vice versa.
TECHNICAL INFORMATION BELOW - NOT IMPORTANT TO READ
Overview of "backwards compatibility" - meaning what a TS136 user will see when playing a map made with this mod, while not having it installed themselves:
Within Cave levels:
Altars show up only on surface terrain types, not Dirt
Spring of Life show up on any terrain type
Ziggurat doesn't exist in cave levels on any terrain
The rest shows up only on Dirt terrain type
vanilla surface terrain decorations (ie mountains, trees, flowers, hills etc) in caves are fully backwards compatible to TS136
There are also miscellaneous bugfixes and alterations, visible only to those with this mod installed:
-Arena.wav sound effect enabled for surface Arenas (already present in caves)
-WTwr.wav ditto for surface Wizard Towers
-Fires now has a visual on surface lava (was not done in the original Mapmaker Addition)
-Poison clouds and Ash Clouds can be placed underground
-Wizard's Towers use their cave appearance in caves instead of their grassland appearance
-Anti-Magic Shells display correctly on 3-hex cave towns
-Farms in cave levels use the "Inn" beta graphic instead of having an illogical (for caves) windmill.
-Cave Entrances can now be placed on water!!!! So you can have a cave entrance usable only by boats, swimmers, flyers and floaters!
-all vertical plant structures now count as full Forest, including 6 movement cost/forest/concealment interactions. That means smaller tree clumps, mushroom and cactus clumps.
-Lightning Altar's sparks dance three times as quickly
-Other Altars glow pulse as slowly
And more equally minor stuff I can't be bothered to mention
It's otherwise pretty much the TS136 ruleset. If you want to play a mod with these mapmaker additions, you're after Ziggurat Engine, AoW Evolved, or (if he ever gets around to updating it) IniochReborn's AoWx. This release.hss file can also be combined with AoW+. For those with DevEd knowledge, you can combine it with any mod - you just insert this release.hss and then use DevEd to repair unit production lists from cities and structures, plus any mod alterations to raze defenders/dungeon guards.
If you encounter any error messages or messed up recruitment lists, please inform me so I can fix those issues.
Most of the work for this (particularly creating the combatmap assets as strategic-map options) was done by Codyksp, the maker of AoW Evolved.