Merge pull request #1 from MailCore/master

merging latest mail core 2
removed unused variable to removed compilation warning
Merge pull request #649 from marcopifferi/master

Remove unused variable to avoid compilation warning.
Use SSLv3 to workaround curl issue
Updated to libetpan 1e5bb22b0b560175faed91430c6ee7de0c818f88
Merge pull request #648 from rlaferla/master

Updated providers.json
Merge pull request #2 from MailCore/master

merge lastest MailCore
Fixed #651: interrupt anyway even if IDLE is cancelled early
Initial value for interrupted state of IDLE operation
fixed the architecture warning at first launch in XCODE 5.1
Merge pull request #655 from marcopifferi/master

Fixed the warning that appears opening the project on XCODE 5.1
Fixed IDLE operation interruption
Merge pull request #656 from foxinushka/master

Fixed IDLE operation interruption
Fixed potential crash (fixed #658)
Improved IDLE interruption (#656)
Added sort array in place
Fixed dispatch queue memory management.
Fixed session reuse
Merge pull request #666 from rlaferla/master

Update providers.json
Fixed #671: workaround bad message encoding