Episode 4 Update!

# Level 4 Release Changelog: 

## General: 

•  Feature: Add F10 to toggle UI 
•  Fix: Hide empty text when inventory slot is filled. 
•  Feature: Added level select scene. If you got to end of game previously, it will unlock levels. 
•  Fix: Properly write init file 

## Level 4: 

•  Feature: Added Cutscene 
•  Feature: Added Level 

## Level 3: 

•  Fix: Small dialog typos 
•  Feature: Added way to get through airport fence to reduce subway trips (new lines) 
•  Feature: Subway is faster and stays at stations for shorter period of time. 

## Level 2: 

•  Fix: truncated line in cutscene