[Fixed] net library
[Removed] umsg stuff from net library

Closes #2
[Add] methods to net library

I left out Read-/WriteType, because it can be used to get sensitive types.
I am not sure about Vector and Angle, they can be sent as floats/doubles, after all. The wiki says it actually compressed them, though.
Merge pull request #50 from Xandaros/patch-1

Fix net library and remove commented out umsg library