V12 preview

Hi!

You can now opt in on the beta called "unstable" to get the absolute latest version. I plan to update this branch with smaller updates more often. But please understand that this branch will have even more bugs as I won't have the time to do any real testing. Also I may not have the time to write any release notes for this branch. I will make an exception for the first one:

New mesh optimization algorithms. This will fix most of the holes in the geometry. I worked real hard on this one. Please post a comment if you find any problems.

Better scaling and positioning of inventory items.

Have fun! Jens