Make the OAuth Provider plugin compliant with the 1.0a specification as 1.0 has known vulnerabilities.
Add oauth_verifier parameter for 1.0a compliance. Disable plugin automatic updates.
Missing '&'
Confirm oauth_verifier was correctly specified. Return email and display_name with access token.
Add user_id to the access token return
Add debugging information to access_token response failures.
Add oauth_verifier to request token class;
Remove verifier debugging code.