renamed destructive test as destroy_db_and_test()
Merge remote-tracking branch 'remotes/ketch/separate_parsing' into separate_parsing
fixed minor merge errors in PR #102 test.py
made tests clean up after themselves even with errors
moved Post.citations cleanup to Post.delete() method
added test for automatic citation deletion
added test for removal of post updated to remove spnetwork tag per issue #81
fixed issue #81
added test for citation updating for PR #102
added updating of paper bindings when a post is updated for PR #102
got rid of code using obsolete core.Recommendation class
All tests passing.