Game & Demo Update v0.913

[p]Hi adventurers,[/p][p][/p][p]v0.913 is now available on the game and demo branches:[/p]

• [p]Fixed an issue when building a fortress wall on top of another one causing it to disappear[/p]
• [p]Various optimizations[/p]

[p]Let me know if you experience new instabilities with this version, as those optimizations required quite a few modifications. And in case of issues, don't hesitate to switch to the debug branch![/p][p]Thanks for playing, and please don't forget to leave a review, it helps a lot![/p]