Release an alpha update

known issues: 

* autoshoot when getting new guns still happens for some reason
* audio levels are not consistent
*enemies do not "die" when they hit the forcefield but they do not cause damage either
* sometimes the score does not full reset on replay
* when you die the pause is really short so you end up hitting "replay" but even noticing you are dead. LOL

Enjoy the play test.

Considering changing the movement but we shall see.