Speed-up of quantity initialisation
Change try/except to if statement that checks for more specific problem
Further speedup: no local import(!), return whenever ready
Make Quantity initialisation of Quantity even faster
Add entry to CHANGES.rst
io.ascii LaTeX table writer: add tablealign to latexdict

fixes #1777
Fix Astropy intersphinx URL
Correct behaviour of inplace ufunc's for Quantities holding non-contiguous data
update CHANGES.rst
Fix a problem that caused MaskedColumn.__getitem__ to not preserve column metadata. This required adding a workaround for a bug in Numpy which causes MaskedArray.__getitem__ to not call __array_finalize__. Fixes #1471.
Partial fix for #1849.  Ignore the endianess markers in Numpy dtype strings.
Introduce sidereal_time method to Time
Also changed internal use of lon, lat: swapped order in call sequence to
match convention (and coordinates), made default None, so that error can
be raised if an local sidereal time is requested, and used Longitude/Latitude
for them so that they can be defined much more easily.
Add documentation
Also fix behavior for MaskedColumn with ``take`` and added regression test
Use explicit order arguments in format; proper spacing in CHANGES.rst
Added docstring for MaskedColumn.take based on numpy.ndarray.take
Added tests for scalar take and also added tests for using np.take as a function
Ensure arguments to take get passed through
Formal sidereal_time.__doc__ such that build_sphinx is happy
Angle subclasses should decide on class; correct Latitude.__setitem__, doing
validation upfront and ensuring no temporary object is created