PERF: Performance improvement for MultiIndexes with a DatetimeIndex level
DOC: Clean Cookbook Issues: Tabs, expanded_apply, axis aliasing, etc.
Merge pull request #8535 from jnmclarty/cookbook_inline_examples

DOC: Clean up Sphinx Issues, fix tabs, in Cookbook
Merge pull request #8544 from mtkni/master

PERF: Performance improvement for MultiIndexes with a DatetimeIndex levels
DOC: v0.15.0 corrections
DOC: Update ecosystem.rst: Add IDE, IPython, qgrid, Spyder, API, quandl, Out-of-core, Blaze

DOC: Update ecosystem.rst: Add IDE, IPython, API
DOC: Update ecosystem.rst: Add GUI > Spyder
DOC: Update ecosystem.rst: GUI -> IDE, IPython > qgrid, API
DOC: Update ecosystem.rst: -> IDEs
DOC: Update ecosystem.rst: depluralize
DOC: Update ecosystem.rst: Add IPython [Notebook] description; alphabetize
DOC: Update ecosystem.rst: add Blaze, alphabetize
Merge pull request #8507 from westurner/patch-3

DOC: Update ecosystem.rst: Add IDE, IPython, qgrid, Spyder, API, quandl, Out-of-core, Blaze
PERF: fixup datetime_index repr perf (GH8556)
Merge pull request #8557 from jreback/dt_perf

PERF: fixup datetime_index repr perf (GH8556)
DOC: formatting issue in scatter_matrix section
BUG: fix panel fillna ignoring axis parameter
added/fixed tests and re-ordered _is_mixed_type check
fill axis defaults to stat axis
implement inplace; simplify a bit
changed ffill and bfill default axis to None
fixed inplace implementation
added in @staple's tests
return explicitly for inplace
trying Panel.apply
more apply work