Namespace AEAD header guards
Add sending std::vector to TLS::Channel
Add build instructions for iOS, sent by Jeffery Walton.
merge of 'a25b72d98eb3f88fcf577fabfcd430ef0758debc'
     and 'e94f646a2b2fe793b40067b09c95a5871e52a43a'
merge of '2139fa117e35116a6d728cc58b050fd5fa20994f'
     and 'dd71537d67dd5adb9ab0859ba761ce2fd78c042b'