Edit turret structure to illustrate how they should generally be constructed.
Update tower scripts for greater modularity.

Towers now have a public list of enemy types they are allowed to attack. Also fixes a bug which allowed towers to attack targets which had already moved out of their range.
Add support for tower changes in debug level
Fixed shader in opengl
Add visual flair

Add particle effect for enemy death, as well as sounds for tower shooting and enemy death. Move some things around into new subdirectories. Create base tower prefab.
Change enemy behavior script to spawn death animation on death
Add sound files
Merge branch 'master' into christian_staging
Add waves and currency, status bar updates
Create base email gimmick and email response script skeleton.

Also add a new folder for fonts.
Merge with aaron_staging
Commit previously unsaved changes. Oops.
Add new death animation for second enemy type

Same as the original but green. Also tweak the red death animation to look a bit better.
Add friend request gimmick, improve email gimmick

Add animations to reply and delete buttons.
Delete duplicate prefab, rename gimmick script

Also did a little bit of directory refactoring.
Complete gimmick skeletons

Also did some organization as usual.
Make friend request gimmick scalable
Create script to randomly select email contents

Contents are based on whether or not the email is marked good or bad.
Add script to randomly populate friend request gimmicks

still needs to populate the profile picture element.
Add script to populate download gimmick text fields.