BUG: Test and fix for subclasses of CacheableOffset (GH4609)
ENH: (GH4629) Support for using a DatetimeIndex/PeriodsIndex directly in a datelike calculation
     e.g. s-s.index
BUG: fixes issue #4322

Adds support for the thousands character in csv parser for floats.

Updated docs to reflect bug fix.
TST: Removed double import in test io.tests.parser_tests.
ENH: avoid branch in thousands check. Thanks to @cancan101
DOC: update attribute access docs for Series/Panel access
DOC: indexing.rst edits
Merge pull request #4598 from guyrt/csv-import-arg-conflict

csv_import: Thousands separator works in floating point numbers
BLD: test_perf, retrieve short form hash from git directly GH4654
ENH: In HDFStore, handle a passed Series in table format (GH4330)
Merge branch 'offset_cache' of https://github.com/cancan101/pandas into cancan101-offset_cache

Conflicts:
	doc/source/release.rst
Merge pull request #4664 from jreback/hdf_series

ENH: In HDFStore, handle a passed Series in table format (GH4330)
Merge pull request #4641 from jreback/arthops

ENH: (GH4629) Support for using a DatetimeIndex/PeriodsIndex directly in a datelike calculation