BUG: fix skiprows option for python parser in read_csv
CLN: do not use mutable default arguments
Fixes issue #4967
Merge pull request #4970 from jreback/invalid_compare

API: raise a TypeError on invalid comparison ops on Series (e.g. integer/datetime) GH4968
Merge pull request #4966 from cpcloud/scatter-matrix-kwargs

CLN: do not use mutable default arguments
Merge pull request #4972 from alefnula/iss4967

CLN: change print to print() in docs
Merge pull request #4969 from guyrt/issue-4382

BUG: fix skiprows option for python parser in read_csv
General print statement cleanup.
Merge pull request #4973 from alefnula/print-cleanup

CLN: General print statement cleanup.
TST/CLN: pare down the eval test suite
Merge pull request #4974 from cpcloud/eval-test-paredown

TST/CLN: pare down the eval test suite
FIX: resample to single group with custom function
Merge pull request #4494 from Komnomnomnom/resample-sing-grp-bug

FIX: resample to single group with custom function
BUG: Make sure series-series boolean comparions are label based (GH4947)