…eter

* github.com:pydata/pandas: (554 commits)
  BUG: compat with Stata ver 111
  Fix: F999 dictionary key '2000q4' repeated with different values (pandas-dev#14198)
  BLD: Test for Python 3.5 with C locale
  BUG: DatetimeTZBlock can't assign values near dst boundary
  BUG: union_categorical with Series and cat idx
  BUG: fix str.contains for series containing only nan values
  BUG: Categorical constructor not idempotent with ext dtype
  TST: Make encoded sep check more locale sensitive (pandas-dev#14161)
  DOC: minor typo in 0.19.0 whatsnew file (pandas-dev#14185)
  BUG: fix tz-aware datetime convert to DatetimeIndex (GH 14088)
  BUG : bug in setting a slice of a Series with a np.timedelta64
  RLS: v0.19.0rc1
  DOC: clean-up 0.19.0 whatsnew file (pandas-dev#14176)
  DOC: cleanup build warnings (pandas-dev#14172)
  Add steps to run gbq integration testing to the contributing docs (pandas-dev#14144)
  ENH: concat and append now can handle unordered categories (pandas-dev#13767)
  DEPR: Deprecate pandas.core.datetools (pandas-dev#14105)
  API/DEPR: Remove +/- as setops for DatetimeIndex/PeriodIndex (GH9630) (pandas-dev#14164)
  Fix trivial typo in comment (pandas-dev#14174)
  API/DEPR: Remove +/- as setops for Index (GH8227) (pandas-dev#14127)
  ...

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