Version bump to 2.5.6.

Version 2.5.5: compatibility updates for game version 1.17.

Fix "Enable RICO" button init.

Version 2.5.3; game version 1.16 (Financial Districts).

Update translations.

Version bump to 2.5.2.

Version bump to 2.5.1.

2.5 update: compatibility updates for game version 1.15.

Force-reset options panel on intitial opening.

Update translations.