Make bibliographic database methods static and hook into main workflow
Bibliographic classifier now works from bottom up and exits when found
Return a boolean value from the bibliographic NLM classifier to ascertain whether to continue
Aggression check in bibliographic database module
Externalise function to get stripped tagless contents of an element
Retrieve bibliographic entries from database where found
Substitute in bibliographic entries from database where found
Indent TEI output
Change "rid" to "id" in reference list
Update links to new hashed ID of database object
Refactor for readability
Check for NoneType concaternation in manipulate
Update IDs in tests owing to new parsing
Further work to pass tests; undo pretty_print at TEI stage as this wrecks output
Fix for test 011
Fix for test 006