DOC: minor fix in extract docstring
DOC: tweak ecosystem section
DOC: tweak ecosystem section
DOC: tweak ecosystem section
DOC: tweak ecosystem section
Merge pull request #5838 from danielballan/extract-docstring

DOC: minor fix in extract docstring
ENH: Improve error message for PeriodIndex to infer_freq. Closes #5841.
Add pandas cookbook to tutorials (for #5837)
BUG: Bug in selection with missing values via .ix from a duplicate indexed DataFrame failing (GH5835)
Merge pull request #5847 from jseabold/fix-5841

ENH: Improve error message for PeriodIndex to infer_freq. Closes #5841.
Merge pull request #5849 from jreback/dup_selection

BUG: Bug in selection with missing values via .ix from a duplicate indexed DataFrame failing
BUG: fix issue of boolean comparison on empty DataFrames (GH5808)
Merge pull request #5810 from jreback/bool_ops

BUG: fix issue of boolean comparison on empty DataFrames (GH5808)
ENH: Refactor code to add is_view method for Series.
DOC: Add is_view to release notes
Merge pull request #5853 from jseabold/add-is-view-series

ENH: Refactor code to add is_view method for Series.
DOC: release notes
DOC: release notes
Revert "DOC: release notes"

This reverts commit 8788aff6d8b6e50c2b1252da36dfe9f4d24e3168.
Revert "DOC: release notes"

This reverts commit 2a8cd09acbe78e5b325f14082de2b0b496af2747.