fixes a bug where a Basic auth digest header can get encoded with newlines inside
Updated changelog
Bumped to 1.4 in preparation for next release.
Added tag 1.4b1 for changeset 0d1bdb99a535
Update docstring to reflect failure reported in pull request #21
Merged in jdye/setuptools (pull request #21)

fixes a bug where a Basic auth digest header can get encoded with newlines inside
Add support for linking Pull Requests in changelog.

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extra : rebase_source : f94412eefa4bf0f073a8ee30821dfc5a7a6f0d8a
Update changelog for Pull Request #21.

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extra : rebase_source : d89b8c105bd561122c6ae8d9b302db6f0eb6060c