- Clarify that complete algorithms are canonical
  - Break off backwards ecn idea into ideas directory.
  - Define RTT_min
  - cite prop 325
  - Count INTRODUCE1 towards SENDME, don't count SENDME.
  - note optimization for circwindow_inc variability
  - consider limiting the rate of change of circwindow_inc
  - Mention hs-ntor allows extra data fields
  - Mention if we calculate recieve window, it can become negative.
  - Track outstanding sent cells for better BDP estimates.
  - Use min of backoff multiplier vs BDP, not max.
  - We can safely set our initial congestion window much higher than TCP.

An updated and expanded version of "Direct Onion Services:
Fast-but-not-hidden services”.

Also borrows heavily from "Single Onion Services" (Proposal #252).

did not check pseudocode for well-formedness

Needs a round of proofreading before I call it a "draft".

Most notably, combine the managed plugin sections.

Also, the "raw socks4/socks5" thing is dumb; take it out.  Clients can
do that just find with external plugins.  Instead of saying
   bridge socks4 addr:port keyid proxy=127.0.0.1:9999 ,
you can just say
   bridge obfs addr addr:port keyid
   ClientTransportPlugin obfs socks4 127.0.0.1:9999

Which is actually way cleaner.