Update Version 0.2.0a

Ahoy!

I want to start out by saying, I recommend waiting for the next update to really give this another play. I am going to slow down my release schedule so I can provide more meaningful gameplay updates. I want to flesh out the entirety of the gameplay loop and mechanics in the next update, and then after that I might be able to pick up the pace again. It just seems silly to release an update that, while it adds a new component to the game, the game's systems as a whole still feel largely incomplete. 

That being said, I wanted to push this update regardless, because it's what I said I'd do.  So here are the details:

New Features Summary:

• Added a chance for monsters to drop gold. Gold will carry across runs and can be used to unlock new things.
• Added a new ship to unlock. The new ship has 4 starting cannons, but moves slower.
• Added a chance for enemies to drop a health keg which will heal you when collided with.
• Created a run timer.
• Created a run summary on the Game Over screen.

Bugs Fixes / Dirty Details

• Created a system for unlocking "unlockables" to support easily adding all future unlockable objects.
• Fixed issues with Pathfinding breaking when too many enemies were spawned.
• Added enemy clean up logic for enemies too far from player.
• Created system for dropping items and loot tables to support easily adding additional drops.
• Created dynamic menu system for handling lists of unlockables.
• Implemented auto-saving for gold and unlockables.
• Created a ton of bugs and then fixed them.
• Fixed an issue where one-shotting enemies would skip a surrender check.
• Rebalanced the mass of player and enemies.