Hotfix 0.6.9

- "Any" option is added for peasant's armor. This option will be selected as default for new peasants.
- Reduced amount of wood needed for craft charcoal (from 10 to 5).
- Fixed a bug where archers didn't attack enemies from towers if they didn't have a path to that enemies.
- Fixed a bug where peasants with bows/crossbows and selected "Any" weapon didn't switch weapon to another after spending all arrows.
- Fixed a crash which may occured after saving a game without buildings.