BUG: Fixes gh-2208, alignment in subarrays
Added tests for fix in alignment of subarrays, gh-2208
MAINT: Remove no longer existing files from MANIFEST.in.
MAINT: Move doc/swig to tools/swig.

Also update MANIFEST.in and documentation to reflect the move. The
discussion of this change is at #2384.

Closes #2384. Closes #4374.
STY: Whitespace patrol on numpy.i.
DOC: Document doc/swig move in 1.9.0 release notes.
Merge pull request #4473 from Sankarshan-Mudkavi/fix-gh-2208

BUG: Fixes gh-2208, alignment in subarrays
Merge pull request #4487 from charris/move-swig-to-tools-directory

Move swig to tools directory
ENH: add extended axis and keepdims support to median and percentile
MAINT: revert back to separate median implementation

Merging median and percentile make would break astropy and quantities as
we don't call mean anymore. These packages rely on overriding mean to
add their own median behavior.