Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Outlook support in providers
whitespace
Merge pull request #380 from CodaFi/Providers-Outlook

Added provider for outlook.
Merge remote-tracking branch 'upstream/master'
ObjC interface to registering providers
whitespace
Merge pull request #381 from CodaFi/ObjC-Providers-Registration

Objective-C providers registration interface
Fixed #391: fixed int conversion
Merge remote-tracking branch 'upstream/master'
Fixed #395: fixed conversion between MCOIndexSet and NSIndexSet
Added arm64 support
Merge remote-tracking branch 'upstream/master'
Implement SMTP noop
Implement POP noop
Implement IMAP noop
Brace styling
Implement Objective-C Interface