Bump to 18.2.0 (semantic versioning)

Regenerate docs.cfg for 2.7

Release 2.6.3

 - Bump protocol and version numbers
 - Regenerate config/docs.cfg
 - Fix \f in localization messages and regenerate source/locale/AC.pot

Regenerate config/docs.cfg

First beta version for 2.7: release 2.6.1!

* Update version number
* Regenerate config/docs.cfg

Deploy the MS: it is beta no more

2.5.9 is ready!

Inverse quartic damage, but quadratic for classic mode

2.5.7!

2.5.6! Now with Windows XP support!