Replaced 'body' with 'payload' in instances where this would be
confusing.

Added a flag in the HEADERS frame for header continuations.

Added pointers in HEADERS+PRIORITY and PUSH_PROMISE which reference
the flags in the HEADERS frame.

This should resolve #50
Updates from pmcmanus review.
Switching to ALPN.  Closes #59.
Clarifying flow control requirements.  Closes #87.
Removing references to browsers and user-agents. Closes #27.  Removing DoS considerations in favor of #93 (or similar).
Giving due credit, belatedly.
Merge pull request #98 from grmocg/master

Header frame continuations