Version 1.31 released

This version contains some very boring yet important technical upgrades (solves GFX card problems on some machines) and traditional spelling fixes and translation improvements.

• [misc] Upgraded to the newest engine (which, among other things, has an important improvement of forcing the OS to always use the best GFX card, which solves several potential technical issues). - [misc] Upgraded third party libraries (among other things some national characters in some languages look more clear now). - [misc] Translation (PL) improved. - [misc] Translation (DE) improved.

• [fix] Spellbook button color. - [fix] Many spelling fixes in the manual.

BTW, don't forget to wishlist the third part! https://store.steampowered.com/app/3823520/Legends_of_Amberland_III_The_Crimson_Tower/