Add some open tasks for 0.2.1.x.

      - config option to publish what ports you listen on, beyond

        ORPort/DirPort.  It should support ranges and bit prefixes (?) too.

      - Need to figure out the right format for routerinfo_t on this.

    - 121: Hidden service authentication

K   . 121: Hidden service authentication:

           missing: delayed descriptor publication for 'stealth' mode.

R   d 128: families of private bridges

    - 134: handle authority fragmentation.

    o 135: simplify configuration of private tor networks.  Th

    - 140: Provide diffs betweeen consensuses

K   - 143: Improvements of Distributed Hidden Service Descriptor Storage:

           only easy parts for 0.2.1.x, defer complex ones to 0.2.2.x.

    - 147: Eliminate the need for v2 directories in generating v3 directories

    - 148: Stream end reasons from the client side should be uniform.

K   - 155: Four Improvements of Hidden Service Performance

  - Maybe:

    - 145: Separate "suitable from a guard" from "suitable as a new guard"