flux correction for COS now averaged over range
initial commit of working stis extraction code
removed bug when iterating in time.  Time indexing accross segments still needs thought
Refactor functions into utils and PEP8 syntax changes
forgotten import in utils
framework for stis calibrations
added quick plotting routine for quicklooks
added matplotlib requirements to travis
rearrange imports to fix warning
initial commit of analysis module
initial version of stis calibration functions in c++
Merge branch 'dev'