Add __call__ to Sphinx API docs (fixes #1817)
Implement `InheritDocstrings` metaclass to automatically inherit
docstrings on methods from those in the base class.
Add warning about multiple inheritance.
Move io.votable to use InheritDocstrings
Move units to use InheritDocstrings
Inherit ndarray docstrings in Quantity
Fixing some broken links of coordinates, convolution, constans, time and io
Fixed alignment
Fixed more links, but a few still remains
minor fixes
Fixing many links
Merge pull request #2135 from cdeil/issue_1817

Add __call__ to Sphinx API docs
Merge pull request #2162 from bsipocz/some_fix_for_1221

Fixing some broken links of coordinates, convolution, constans, time and io
Fix locations / links in astropy.modeling Sphinx API docs
standardizing license headers in io.ascii package
Merge pull request #2165 from rastogitanuj/ascii_header_fix

Standardize license headers in io.ascii package
minor documentation fixes & comments in convolution
Prevent convolution of enormous (>1 GB) arrays unless explicitly
overridden by user.  This is important to catch situations in which
highly asymmetric cubes (e.g., a spectral cube with ndim = [1024,8,8])
are padded to become gigantic (1024**3 pixels, each with 8 bytes... and
you need 4 copies!!!)
need to check for that override parameter...
Exception -> ValueError