Gitberg

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* update repo lists
* add 61334-62774
* missing
* switch to using github personal access tokens

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* updated appdirs dependency to resolve conflicts
* add __str__ method to pandata
* update repo lists
* add 61121-61334
* missing
* removed

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* updated requirements
* pyepub has been factored into gitberg-autoupdate

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* update repo lists
* add 60078-61120
* clean up dependencies in setup.py
* fix many problems with py 3 compatibility
* print function
* unicode vs. str
* read binary
* dictionary iterators
* function iterators
* imports

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* update repo lists
* add 59371-60077
* update pyparsing requirement

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* update repo lists
* add 58592-59370
* handle missing ids in new command
* add .sib, .mus, .mxl to audiofile list
* update requirements
* fix bug setting _repo_name rebuilding a deleted repo with a previously assigned slug