v0.5.4 Memory issue fix

This is a small patch that reduces memory use greatly.

Just like v0.5.3, this is a patch we've made while working on v0.6.

More features and gameplay changes will be included in the big update, v0.6!

Here's what's we new in v0.5.4: 

• Katya new face
  • Katya used to have old design for a long time, now she's got a proper rework and has a face that matches current style!
• Fixes
  • Game requiring more than 3GB of memory (even in worldmap) - Fixed

Thank you for playing and keep on sharing your experience and ideas thru twitter : 

https://twitter.com/unwargame

And join our dev discord server to talk about guns and waifus! : 

https://discord.gg/HtUDeG2