Plot._find_all_axes -> Plot.get_axes:

    - override Figure.get_axes to accept Axes name

(cherry picked from commit bdcbdd2ea9e6c6c19efd58441ad565ece62886c8)
DataQuality{Flag,Dict}.query_dqsegdb:

    - added classmethod to query aLIGO DQSegDB
tex.float_to_latex: minor improvements
log scale: <1e-2 prints in scientific notation
SpectrumAxes: removed annoying x/ylabel bug
is_contiguous: added tolerance option
timeseries/append: corner-case bug fixed (I think)
timeseries/common: fixed bug introduced in last commit
setup: add bottom-level namespace package
StateVector.bits: set default bits based on dtype
StateVector.get_bit_series: don't cache
Revert "timeseries/append: corner-case bug fixed (I think)"

This reverts commit e3117701c4fe27867b7fea1397bc7e4701886b15.

Conflicts:

	gwpy/timeseries/common.py
Series: fixed epoch error in index
HDF5: improved I/O behaviour when h5py missing
ASCII: added generic ASCII reader for 1-D Series
LIGO_LW: removed duplicate methods

    - renamed identify_ligolw_file -> identify_ligolw
tests: minor edit
test.timeseries: added ASCII IO test
ASCII: fixed missing import
Spectrum: fixed rouge import