Issue #2178079 by mahfiaz: Added new optional dependency to HTTP_Request2, since Net_Curl is deprecated, updated documentation.
Issue #2177807 by mahfiaz: Fixed missing dependency php5-imap in installation instructions.
Issue #2179177 by mahfiaz: Fixed, removed extra bracket from configuration example files.
Issue #2181003 by schutetwin, mahfiaz: Fixed possible RFC 2045 violation when Content-Transfer-Encoding header from original email is preserved and is something other than 7bit, 8bit or binary.
Issue #2181049 by mahfiaz: Fixed email loop with Mailgun.