Marking for implementation.
Updating ALPN version.
Removing implementation draft notice, will restore after IETF Vancouver.
[#250] remove substitution from HPACK
Merge pull request #262 from jpinner/header_updates

[#250] remove substitution from HPACK
Renaming frame size error; using it consistently.  Fixes #246.
Merge branch 'master' of github.com:http2/http2-spec
Proposal for #257.
Closes #263.
Adding constraints to push.  Fixes #193.
Restricting frame length to 2\^14.  Closes #260.
Adding restrictions on colon header usage.  Closes #221.
420 Enhance Your Calm Error Code
Merge pull request #265 from jpinner/420_enhance_your_clam

420 Enhance Your Calm Error Code
s/:host/:authority/g.  Fixing this for CONNECT.  Closes #268.
Merge branch 'master' of github.com:http2/http2-spec
fix P6 reference
fix anchor
Changelist

Added changes to change list and reworded based on Martin's feedback.
Merge remote-tracking branch 'upstream/master' into settings_ack

Conflicts:
	draft-ietf-httpbis-http2.xml