Fix for GOES light curve, small clean up on lightcurve.py
Added fix for another FITS file format, also added a new utility in time to validate a time format
Cleaned up import statement
further cleaned up import statements
Removed debug prints and more pythonic
Fixed reference to data source
Fixed and updated CHANGELOG
Added tests
Addressing comments
bug fix
another bug fix
Updated error message for easier debugging
Fixed default data to more likely availability
fixed error conditions
fixed error codes
Merge pull request #942 from ehsteve/goes_fix2

GOES Lightcurve Fix
sot added to accepted instruments to map
added tests and SOT sample file for sot maps
Adding corrections proposed by @dpshelio and @derdon
Added metadata-focused test for GenericMap.resample