Beta 0.2.3

I added some better water generation and revamped the bouyancy system. made an installer, compiled for windows only but source should work on linux (untested atm). no changes to the server. In this version (and only this version) you can click NUMPAD_1 to add more sine waves (in increments of 10) to the water simulation and NUMPAD_0 to remove sine waves (also in increments of 10) from the water simulation. it will not go below 0