BUG: Fix for issue with PythonParser::_check_thousands. (GH4596)
Merge pull request #4602 from cancan101/number_parsing

Fixes issue with TextFileReader using python engine and thousands != ","
BUG: bug in getitem with a duplicate index when using where (GH4879)
Merge pull request #4881 from jreback/boolean_dup

BUG: bug in getitem with a duplicate index when using where (GH4879)