baseline
low hanging fruit around put_pixels

From:
     1393    0.627    0.000    1.211    0.001 opc.py:137(put_pixels)

To:
     1393    0.243    0.000    0.520    0.000 opc.py:137(put_pixels)
Call math functions directly.
Profiling is known to be slow. Don’t do it by default
performance todos
some speed test scrtips
Merge pull request #3 from Dewb/performance-testing

Performance Stuffs