BUG: tzinfo lost when concatenating multiindex arrays
BUG: Easter works incorrectly in negative offsets
BUG: CustomBusinessDay apply raises NameError when np.datetime64 is passed
ENH: Add dateutil timezone support GH4688

Adds support for dateutil timezones across pandas.
Support conversion between dateutil and pytz timezones.
Ensure timezone functionality is tested with both dateutil and pytz.
Merge pull request #7195 from sinhrks/easter

BUG: Easter works incorrectly in negative offsets
BUG: Bug in broadcasting with .div, integer dtypes and divide-by-zero (GH7325)
Merge pull request #7328 from jreback/div_error

BUG: Bug in broadcasting with .div, integer dtypes and divide-by-zero (GH7325)
Merge branch 'custombd' of https://github.com/sinhrks/pandas into sinhrks-custombd

Conflicts:
	doc/source/v0.14.1.txt
Merge branch 'concattz' of https://github.com/sinhrks/pandas into sinhrks-concattz

Conflicts:
	doc/source/v0.14.1.txt
BUG StringMethods on empty series (GH7242)

- all StringMethods are tested and work on empty seires
- moreover extract always returns dtype==object, even when no match is
  found
Merge pull request #6968 from ahlmss/AHLMSS_0.13.1_ahl1

ENH: Support dateutil timezones. GH4688.
UNI/HTML: add encoding argument to read_html
DOC: add