Change names to use camel case in __json__ instead of to_dict
Merge pull request #15 from Connexions/fixes

Change names to use camel case in __json__ instead of to_dict
interrupt safe file write
make storage configurable
postgresl storage backend, with tests
add testing db init to travis
Make postgresql change python3 compatible
Merge pull request #14 from Connexions/postgresql-storage

Postgresql storage
make db setting consistent with archive
Merge pull request #16 from Connexions/settings-fix

make db setting consistent with archive
Catch HTTP Errors and return 400 when deriving content
Derive a copy of a book in archive
Add support for modifying a collection / binder / book
Add functional tests for posting new collections
Merge pull request #17 from Connexions/binders

Binders / Collections / Books