Fixed lots of German all-cap strings (dkfans#1531)

* Increased version number too

Beta feedback handled for NG+, TwinKeepers 8 revised

Urzatron21 delivered new script for final Twin Keepers level, fixes an infinite unit spawn, and emulates original behavior on KeeperFx

New Game+ has some remaining exploits fixed.

Tagged 0.43 release.

Tagged the 0.41 as revision 668.

Tagged the v0.40.

Tagged another release.

Forgot to tag the v0.39 before; doing it now

new version 0.38b tagged

tag for v0.38a