segments: fix __all__ to include DataQualityDict
plotter.gps: fix astropy bug
docs: add missing import to statevector example
docs: cleaned up plotting API
docs: fix broken link
time.to_gps: allow lal.LIGOTimeGPS
spectrum.lal_: fix bug in windowing, and numsegs
kerberos: minor change
Array: use to_gps for epoch, other minor edits
setup.py: remove unused lines
TimeSeriesDict.fetch: remove outputcontext
plotter: fix doc references
docs: improved plotter docs
StateVector: rename 'bitmask' to 'bits'