Made mailcore::IMAPMessageRenderingOperation public. It made IMAPMessageRenderingType public too: It's been documented as private type.
Added a comment about mailstream_cfstream_enabled.
Fixed build issue.
Fixed 171: Updated CMakefile to latest changes
Fixed #194: SMTP detection is now performed with an almost valid address.
Clean build scripts
Fixed #197: Adding MCMessageRenderingOperation.h to public headers