A heart for Laser Knights <3 

Here is the newest version of Laser Knights, with lots of performance fixes - I am trying to reach a constant 60Hz on Steam Deck ... and it feels like I am almost there ... ;)  still lots of smaller scripts that might need some adjustments, even though they come into use only rarely ... and I have to consider all the side effects, and test, and test, and test .... :)

BTW, I also changed the former heal icon (a cross) to a heart, which makes it much more recognisable.

Lots of other fixes ... hope I didn't invent new ones on the way to a much more stable frame rate :)

Have fun!

Denzi

Changelog

• health and medikit: heart icon instead of 'cross'
• new option: disable 'water refraction effect'
• performance on Steam Deck
• AI balancing
• fixed: player being invisible after being beamed up from a ravine
• fixed: items not being shown in UI (spacemap, quick selection)
• fixed: audio fading out too soon on some effects