[mms] Fix regression in retrieving CAPABILITY information after we login.
Abstract authentication code
[mms] Added support for the Google XOAuth2 authentication mechanism for the IMAP Socket driver.
[mms] Fix regression in mapping message sequence numbers to UIDs when doing an 'all' activity in POP3.
[mms] Fix regression in POP3 SASL PLAIN authentication command.
Released Horde_Imap_Client-2.13.0
Development mode for Horde_Imap_Client-2.13.1