Gitberg

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* added -f option to "library" command, which forces an rdf library update
* "new" command includes rdf library update
* update repo lists
* add 58309-58591
* fix an issue caused by control characters in metadata
* stop excluding mp3 in rsync

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* add auto-updating of the rdf library - use "library" command, which now reports number of repos in the local library, not the list of repos
* add "new" command to facilitate regular addition of books from PG
* update repo lists
* add 58152-58308
* fix a bug where the config global gets wiped before use
* delint

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* update repo lists
* add back ____ repos with new names
* add 57972-58151
* remove 3 junk repos
* fix mod_date bug when repo has no ebook file
* add list of files to remove
* addfiles action. To use this,
1. clone
2. add files by hand
3. run addfiles
* fix filepath handling of repos 1-9
* improve commit messages

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* wikidata occasionally lies about ids- now catching the exception
* improved README template to reflect that not all books are public domain
* update repo lists, removing audio and greek (will add back greek with better names)

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* fixed some greek repo names that were all dashes
* added "rights_note" to description
* start using missing list when iterating a range of book numbers
* suppress some debug messages

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* added handling for an api cache to avoid running out of github calls
* save an api call by caching github repo object in book
* added modification date methods for files in git and files in rdf
* book.meta is now always a BookMetadata object
* refresh_repo action checks rdf for revised files and revises repo
* "local" keyword also turns off wikidata
* updated repo list