Added plyr and reshape comparisons
fixed indentation and import
Update comparison_with_r.rst
TST: ensure_clean needs to import nose to skipTest()
Merge pull request #5761 from chappers/r-compare

DOC: Flesh out the R comparison section of docs (GH3980)
Add idxmax/idxmin to groupby dispatch whitelist (#5786)
Merge pull request #5787 from jorisvandenbossche/groupby-idxmax

Add idxmax/idxmin to groupby dispatch whitelist (#5786)
BUG: dont' coerce reductions in a groupby always to datetimes; only when we have
     actual Timestamps in the data (GH5788,GH5789)
INT: allow internal errors in block construction to bubble up
BUG: resolved GH5788 under numpy < 1.7 because vstack is odd with M8[ns]
BUG: remove convert_numeric=True from groupbys
     perform soft-conversion of numeric dtypes instead
Merge pull request #5790 from jreback/apply_bugs

BUG: dont' always coerce reductions in a groupby always to datetimes
DOC: minor doc updates
TST: aggregate_item_by_item test failure (GH5782)