V .2 Update!

Version 0.2 Update: Better performance and additional features

- Code adjustments and terrain changes to ensure better performance

- Added pause menu; use the escape key to access. Includes tutorial in menu

- Landing Mode: Press space to enter landing mode. This mode lowers control inputs and levels you out, allowing you to precisly land. Includes UI light that turns on for indication.

- Aircraft now rolls when turning at high speeds! Makes the flight model feel alot more fun and responsive

- Dozens of small balancing changes