First Commit

All HSI tests pass, HSI not yet complete
CCSDS test fails
CCSDS compression complete to prediction residuals
CCSDS decompression not started
Migrate to py3.3

Changes to upgrade to use python 3.3
Minor other modifications
Unknown changes and status

I really shouldn't wait 3 months between doing something and comitting
it
Staging point before trying out a new approach for compression.
New verision predictor

CCSDS_codec.py new version of predictor, purely itterative
using in-built numpy itterators.
CCSDS_test.py - minor change
HSI.py - minor change
Merge https://github.com/benjsec/HSI