1.4rc1
Checked for options to be None in parse_requirements
Merge pull request #1025 from dholth/develop

wheel: test WHEEL "root_is_purelib" parser
add release-1.4 to travis branches
can't use easy_install to install virtualenv test req from git
Merge pull request #1027 from kevinfrommelt-wf/develop

Checked for options to be None in parse_requirements
update authors file
merge from develop
1.4rc2
updated install/upgrade instructions
wheel cookbook updates
1.5.dev1
Add a note about external file hosting to the changelog
setuptools upgrade instructions
Merge branch 'release-1.4' into develop
fix #1029 (urlparse.urlparse() instead of just urlparse())
Merge branch 'develop' of github.com:/pypa/pip into develop