Proposed text for #458
Advice on dealing with large header blocks
Moving to 431
Noting server/client distinction
Adding 6585 reference
Removing requirements on Content-Encoding
Merge pull request #495 from http2/nocontentencoding

Removing requirements on Content-Encoding.  Closes #460
Fixing missing xref
Updating issues; checkpoint
Adding ability to send PRIORITY on closed stream, as new priority scheme demands.
Merge pull request #482 from http2/bigblocks

Advice on dealing with large header blocks
fix example syntax
Removing Alt-Svc restrictions on intermediaries.  Closes #462
Clarifying requirements on ALPN use
Merge pull request #475 from dcsommer/master

Proposed text for #458
Merge pull request #489 from http2/issue468

Adding ability to send PRIORITY on closed stream (Closes #468)
Removing BLOCKED
Merge pull request #504 from http2/noblocked

Removing BLOCKED.  Closes #500
Closes #484
Moving ALTSVC frame to alt-svc doc