Added tag 0.6.41 for changeset ad107e9b4bee

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branch : distribute
Bumped to 0.6.42 in preparation for next release.

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branch : distribute
Improve external links finder to not yield duplicate links.

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branch : distribute
extra : rebase_source : 78e932fca32ee0ee1f50794cf998f4e7db78131b
avoid naming problems

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branch : distribute
extra : rebase_source : 29eeb99013055b8d27cad7f7e8898d06a865b188
actually filter the links

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branch : distribute
extra : rebase_source : cb6e3497e1f8594181f10110cbc833bd6c81f89e
Added Dirley to contributors

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branch : distribute
Add unique_everseen from Python 2.7 docs

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branch : distribute
Use a wrapper to ensure unique values on find_external_links. Factors out uniqueness test into a re-usable decorator and simplifies the body of find_external_links.

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branch : distribute