BUG: fix concat to work with more iterables (GH8645)
BUG: Bug in setitem with empty indexer and unwanted coercion of dtypes (GH8669)
Merge pull request #8668 from waveform80/deque-concat

BUG: fix concat to work with more iterables (GH8645)
Merge pull request #8671 from jreback/coerce

BUG: Bug in setitem with empty indexer and unwanted coercion of dtypes (GH8669)
BUG: years-only in date_range uses current date (GH6961)
Merge pull request #8672 from rosnfeld/issue_6961

BUG: years-only in date_range uses current date (GH6961)
ENH: Series.str.split can return a DataFrame instead of Series of lists
TST: fix up for 32-bit indexers w.r.t. (GH8669)
Merge pull request #8675 from pydata/setitem

TST: fix up for 32-bit indexers w.r.t. (GH8669)
CLN: more generic index creation in algorithms.py

CLN: move coerce_indexer_dtype to common
PERF: set multiindex labels with coerced dtype (GH8456)
Merge pull request #8663 from billletson/strsplit

ENH: Series.str.split can return a DataFrame instead of Series of lists
Merge pull request #8676 from jreback/algos

PERF: set multiindex labels with a coerced dtype (GH8456)
BUG: fix writing of Categorical with to_sql (GH8624)

Use .get_values() instead of .values on the block,
this ensures that NonConsolidatable blocks (non-dense
blocks like categorical or sparse) are densified
instead of just returning the raw .values
CLN: fix grammar in extract_index error message
Merge pull request #8691 from sangheestyle/master

CLN: fix grammar in extract_index error message
BUG: fix Categorical comparison to work with datetime

pd.Timestamp is one of types that don't pass np.isscalar test, that was
previously used in _cat_compare_op.  pd.lib.isscalar should be used
instead.
Merge pull request #8682 from jorisvandenbossche/sql-8624-categorical

BUG: fix writing of Categorical with to_sql (GH8624)
Merge branch 'fix-datetime-categorical-comparison' of https://github.com/immerrr/pandas into immerrr-fix-datetime-categorical-comparison

Conflicts:
	doc/source/whatsnew/v0.15.1.txt
API/BUG: return np.nan rather than -1 for invalid datetime accessors values (GH8689)