Bug fixes and patch update

Lost in Space - bug fixes and patch notes (v1.0.1-beta):

I have been collecting player feedback since release, and have published an update to the game to fix some of the reported bugs, as well as implement some basic gameplay enhancements. 

Bugs fixed:

Player V Enemy collision: 
- This was caused by not updating the main game loop when I reorganised the code into separate files. 

FPS Drop after a certain amount of enemies spawned:
-  It was reported that safari can not play this game as well as some other browsers. This is specifically a browser issue. I have however updated a few things in my code to ensure FPS isn't compromised.  

Enhancements:

Clickable perks select:  
- Players can now click bonuses when levelling up, instead of key pressing.