Array: modifications to __repr__ and __str__
Series: added type check on __new__
kerberos.kinit: changed password prompt
TimeSeries: changed read method with new args

    - now takes start and end GPS times, instead of epoch and duration
TimeSeries: removed duplicate copies of functions
Spectrogram: PEP-8 syntax changes
segments: changed sub-classing of glue segments
DataQualityFlag: multiple new features

    - add type class attributes to control element setting
    - added a whole bunch of new functions, including prototypes for
      mapping to LIGO_LW tables
    - added prototype DataQualityList class for grouping flags
StateVector and StateTimeSeries:

    - ArrayTimeSeries: parent class to help 2-D timeseries, for
      StateVector boolean representation
    - three new classes defining state information series
        - StateTimeSeries: boolean array with metadata defining a single
          state bit
        - BitMask: list with metadata defining bits in a state-vector
        - StateVector: binary array with metadata defining a bit word
          with associated bitmask
    - added comparison operation parsing to TimeSeries to return a
      StateTimeSeries
docs: new docs for StateVector et al