bump changelog to 50.15-r2

Author: myk002

changelog.txt

@@ -26,6 +26,18 @@ Template for new versions:
 
 # Future
 
+## New Tools
+
+## New Features
+
+## Fixes
+
+## Misc Improvements
+
+## Removed
+
+# 50.15-r2
+
 ## New Tools
 - `fix/stuck-squad`: allow squads and messengers returning from missions to rescue squads that have gotten stuck on the world map
 - `gui/rename`: (reinstated) give new in-game language-based names to anything that can be named (units, governments, fortresses, the world, etc.)
@@ -50,8 +62,6 @@ Template for new versions:
 - `fix/wildlife`: don't vaporize stuck wildlife that is onscreen -- kill them instead (as if they died from old age)
 - `gui/sitemap`: show primary group affiliation for visitors and invaders (e.g. civilization name or performance troupe)
 
-## Removed
-
 # 50.15-r1
 
 # 50.14-r2