ENH melt uses column name if available
CLN test_reshape
DOC add release note about melt columns.name default behaviour
BUG: Make ExcelFile.parse pass kwds to TextParser
BUG: (GH4145/4146) Fixed bugs in multi-index selection with column multi-index and duplicates
Merge pull request #4139 from jtratner/excel_fix

BUG: Make ExcelFile.parse pass kwds to TextParser
Merge pull request #4148 from jreback/mi2

BUG: (GH4145/4146) Fixed bugs in multi-index selection with column multi index duplicates
TST: additional test case for GH4146
Merge pull request #4144 from hayd/melt_name

ENH melt uses column name if available
Merge pull request #4149 from jreback/mi2.2

TST: additional test case for GH4146
BLD: Disable binary packages while fixes are under way
BLD: add requirements files and update install.sh

This commit adds 5 requirements files: one for each Travis build. The
corresponding sections in ci/install.sh are also removed in favor of these
files.

This allows pandas to have more fine-grained control over versions of
hard and soft deps when using travis.
Merge pull request #4153 from cpcloud/req-files

ENH: add correct versions of numpy installs