BUG: fix failing usage of self.assertRaisesRegexp for python 2.6
BLD: use the wheel url for scikits timeseries
RLS: first release candidate for v0.12.0
BUG/TST: wrong parsing of microseconds with format arg (#4152)
Merge pull request #4166 from jorisvandenbossche/bug-microsecond-parsing

BUG: wrong parsing of microseconds with format arg (#4152)
DOC: minor io/whatsnew doc edits
TST: to_datetime format fixes

CLN/TST: to_datetime cleanup

TST: tests for dayfirst=True
Merge pull request #4168 from cpcloud/sktimeseries-dl-fix

BLD: use the wheel url for scikits timeseries
Merge pull request #4167 from jreback/dt_format

TST: to_datetime format tests
DOC to_datetime warning about dayfirst strictness
TST: remove double call to yahoo finance
Merge pull request #4175 from hayd/datetime_dayfirst_warning

DOC to_datetime warning about dayfirst strictness
Merge pull request #4176 from cpcloud/remove-yahoo-test

TST: remove double call to yahoo finance
CLN: write the attributes in a HDFStore as strings

     These strings are converted to bytes, previously these were written as unicode
Merge pull request #4178 from jreback/hdf_3k

CLN: write the attributes in a HDFStore as strings