TST: sql add tests for NaN handling
Merge pull request #7100 from jorisvandenbossche/sql-tests

TST: sql add more tests (NaN handling, ..)
BUG: GroupBy doesnt preserve timezone
Merge pull request #7099 from sinhrks/grouptz

BUG: GroupBy doesn't preserve timezone
BUG: remove unique requirement rom MultiIndex.get_locs to enable
     multi-index slicing on non-unique multi-indexes (GH7106)
Merge pull request #7107 from jreback/mi_slicers

BUG: remove unique requirement rom MultiIndex.get_locs (GH7106)
ENH/BUG: partial string indexing with PeriodIndex
Merge pull request #7043 from sinhrks/pslice

ENH/BUG: partial string indexing with PeriodIndex
DOC: v0.14.0.txt edits
BUG: Regression in the display of a MultiIndexed Series with display.max_rows (GH7101)
Merge pull request #7114 from jreback/mi_series_display

BUG: Regression in the display of a MultiIndexed Series with display.max_rows (GH7101)
TST: numpy 1.9 -dev exception changes indatetime64 indexing (GH7116)
BUG: Escape `<` and `>` in info _repr_html_

Closes https://github.com/pydata/pandas/issues/7105
TST: windows dtype fix related GH3950
Merge pull request #7118 from jreback/numpy_dev

TST: numpy 1.9 -dev exception changes indatetime64 indexing (GH7116)
`Truncate` behavior on columns is changed.
first draft for row concat
tests for test_format running again
Tests for dfs with non-unique columns names failing.

nosetests pandas/tests/test_frame.py:TestDataFrame.test_column_dups_indexing --pdb
refactored