mailcore2 - simple and asynchronous API to work with IMAP, POP, and SMTP

	Commit message (Expand)	Author	Age
*	Fixed #541: returns uid mapping properly	Hoa V. DINH	2014-01-06
*	Unify Project Style	CodaFi	2013-12-08
*	Fixed memory leak on cancellation in ObjC API	Hoa V. Dinh	2013-07-25
*	Fixed memory leak: operations were retained by the block they owned, which cr...	Hoa V. Dinh	2013-06-28
*	Check for nil completion blocks. Fixed #15	Hoa V. DINH	2013-04-01
*	Implemented ObjC API for SMTP and POP	Hoa V. DINH	2013-03-30
*	Progress for ObjC IMAP operations	Hoa V. DINH	2013-03-26
*	IMAP ObjC async operations implemented	Hoa V. DINH	2013-03-26