4.8.2
performance: Don't autoupdate stale multiplayer games (more than a week old)
Buildings missing from ruleset are removed from loaded games properly
By SomeTroglodyte:
- Fix Map Editor double map holders after ruleset change
- Improve "does this unit found cities" check
- Fix Gdx not forced to UTF-8 when saving a game
Defensive pact notification fix - By tuvus