first commit
Basic setup

Player sprite rendered and responding to translation input
Alien translation functioning

yup :)
Alien bounded translation functioning

yeppers
Added Alien death-by-missile-stuffs

Aliens now die when hit by missiles
Fixed a couple bugs

There were a couple instances where a null-check needed to be performed;
also added functionality to remove aliens which were hit by missiles;
add player missiles which exit the screen
Got animations working :)
Commiting progress
again...
Working animations

Now just to make the exploded sprites go away...
Stuff works!

The aliens display the explosion frame for a "duration" before dying;
there is another issue; but things are more or less performing as
expected
Stuff is working!

The aliens now display the explosion frame in a seemingly appropriate
manner
Cleaned up some files