first trial of extraction
added get_science_slice and moved extraction
Extraction using more pre-defined values
Rename output spectrum columns
added default_trace_position to slice object
added mask to gmos __init__. added comments to GMOSMask to explain the decoupling to a file
fixed up the longslit_problem. the science_frames seem to work.
added the docs and am playing with the science_sets.
slowly building documentation - including rtd requirements file
Merge pull request #37 from wkerzendorf/gmos/reduction

Gmos/reduction
sphinx conf added
Merge branch 'master' of github.com:geminiutil/geminiutil
added a large section about exploring the dataset
added exploring to the index file
Merge pull request #39 from wkerzendorf/docs/update

Docs/update
added instrumentsetup id to repr string
Update initializing.rst
Small corrections to allow longslit day arcs
Merge pull request #40 from mhvk/placeholder

Small corrections to allow longslit day arcs
added a better description for initializing