Optimisation Update 1.7.2 — Supraland Steam update #675243

This update increases the performance. And I polished it so much, it now has a Polish translation.... and Serbian. Because of the optimisation that we did, this update was in the making for a long time, much longer than expected! Remember the Supraland 2 kickstarter campaign: https://www.kickstarter.com/projects/supragames/supraland-2 Here are the changes for this new version: - Optimisation, lowered CPU use a lot, FPS might go up a lot with this update - Added first draft of polish and serbian translation - Added more characters to fonts filling in missing ones in some languages - Changed control setting behaviour, it was weird - Options menu now saves SHOW FPS, DEPTH OF FIELD, MAX FPS (previously it reset after every start of the game) - Fixed save slot loading taking very long (only works for newly saved savegames, old ones still take long to load but will get fixed once they get save...