Added to docstrings in factorize function
BUG: Conflict between thousands sep and date parser.

Fixes issue where thousands separator could conflict with date
parsing.

This is only fixed in the C parser.

Closes issue #4678
BUG: fix issue #4678 for Python parser
BUG: fix skiprows option for python parser in read_csv
API: raise a TypeError on invalid comparison ops on Series (e.g. integer/datetime) (GH4968)
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: JSON support non C locales
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
Merge pull request #4976 from Komnomnomnom/json-locale-fix

FIX: JSON support for non C locales
Fixed _format_labels in tile.py for np.inf.

Since the fractional part of np.inf is 0.0 it is enough to change the
formatter string in this case to the (nearly) equivalent "%.0f".