bytefx V 0.3 final

New API since it's a young library and I suppose is better to have a final release before someone will use them.

Now, better code, better comments, better api, linear methods, real private methods, rewrote drag with new features ... in the same compressed version size, less than 2Kb for MemTronic version !

It's bytefx ... version 0.3 final (if this hasn't bugs, this will be exactly in this way)