More line edits to changelog. Thanks, seborn!

      configuration options starting with "Dormant". Implements tickets

      2149 and 28335.

    - The client's memory of whether it is "dormant", and how long it

      has spend idle, persists across invocations. Implements

      has spent idle, persists across invocations. Implements

      ticket 28624.

    - There is a DormantOnFirstStartup option that integrators can use

      if they expect that in many cases, Tor will be installed but

      progress than previously possible, with the improvements of ticket

      27169. Closes tickets 27167 and 27103. Addresses ticket 27308.

    - When reporting bootstrap progress, treat connecting to a proxy or

      pluggable transport as separate from having successfully using

      that proxy or pluggable transport to connect to a relay. Closes

      tickets 27100 and 28884.

      pluggable transport as separate from having successfully used that

      proxy or pluggable transport to connect to a relay. Closes tickets

      27100 and 28884.

  o Major features (circuit padding):

    - Implement preliminary support for the circuit padding portion of

  o Major features (refactoring):

    - Tor now uses an explicit list of its own subsystems when

      initializing and shutting down. Previously, these systems were

      managed implicitly though various places throughout the codebase.

      (There still some subsystems using the old system.) Closes

      managed implicitly in various places throughout the codebase.

      (There may still be some subsystems using the old system.) Closes

      ticket 28330.

  o Minor features (bootstrap reporting):

    - When reporting bootstrap progress, stop distinguishing between

      situations where it seems that only internal paths are available

      and situations where it seems that external paths are available.

      Previously, Tor would often erroneously report that it had only

      internal paths. Closes ticket 27402.

      situations where only internal paths are available and situations

      where external paths are available. Previously, Tor would often

      erroneously report that it had only internal paths. Closes

      ticket 27402.

  o Minor features (continuous integration):

    - Log Python version during each Travis CI job. Resolves

      relay's descriptor is so old that the relay should upload again

      soon. Relays treat this flag as a signal to upload a new

      descriptor. This flag will eventually let us remove the

      'published' date from routerstatus entries, and make our our

      consensus diffs much smaller. Closes ticket 26770; implements

      proposal 293.

      'published' date from routerstatus entries, and make our consensus

      diffs much smaller. Closes ticket 26770; implements proposal 293.

  o Minor features (fallback directory mirrors):

    - Update the fallback whitelist based on operator opt-ins and opt-

      Patch by Neel Chauhan.

  o Minor features (log messages):

    - Improve log message in v3 onion services service that could print

      out negative revision counters. Closes ticket 27707. Patch

    - Improve log message in v3 onion services that could print out

      negative revision counters. Closes ticket 27707. Patch

      by "ffmancera".

  o Minor features (memory usage):

    - Save memory by storing microdescriptor family lists with a more

      compact representation. Closes ticket 27359.

    - Tor clients now use mmap() to read consensus files from disk, sot

    - Tor clients now use mmap() to read consensus files from disk, so

      that they no longer need keep the full text of a consensus in

      memory when parsing it or applying a diff. Closes ticket 27244.

  o Minor features (performance):

    - Cache the results of summarize_protocol_flags(), so that we don't

      have to parse the same Avoid parsing the same protocol-versions

      string over and over. This should save us a huge number of malloc

      calls on startup, and may reduce memory fragmentation with some

      allocators. Closes ticket 27225.

      have to parse the same protocol-versions string over and over.

      This should save us a huge number of malloc calls on startup, and

      may reduce memory fragmentation with some allocators. Closes

      ticket 27225.

    - Remove a needless memset() call from get_token_arguments, thereby

      speeding up the tokenization of directory objects by about 20%.

      Closes ticket 28852.

    - Add support for emitting STATUS updates to Tor's control port from

      a pluggable transport process. Closes ticket 28846.

    - Add support for logging to Tor's logging subsystem from a

      pluggable transport process. Closes ticket 28180

      pluggable transport process. Closes ticket 28180.

  o Minor features (process management):

    - Add a new process API for handling child processes. This new API

      21900; bugfix on 0.2.1.10-alpha.

  o Minor bugfixes (guards):

    - In count_acceptable_nodes() we now treat the minimum number of

      nodes as at one bridge or guard node, and two non-guard nodes for

      a circuit. Previously, we had added up the sum of all nodes with a

      descriptor, but that could cause us to build failing circuits when

      we had either too many bridges, or not enough guard nodes. Fixes

      bug 25885; bugfix on 0.3.6.1-alpha. Patch by Neel Chauhan.

    - In count_acceptable_nodes(), the minimum number is now one bridge

      or guard node, and two non-guard nodes for a circuit. Previously,

      we had added up the sum of all nodes with a descriptor, but that

      could cause us to build failing circuits when we had either too

      many bridges or not enough guard nodes. Fixes bug 25885; bugfix on

      0.3.6.1-alpha. Patch by Neel Chauhan.

  o Minor bugfixes (IPv6):

    - Fix tor_ersatz_socketpair on IPv6-only systems. Previously, the

      bug 23082; bugfix on 0.2.0.10-alpha.

  o Minor bugfixes (onion service v3, client):

    - Avoid a BUG() stacktrace in case a SOCKS connection is found

      waiting for the descriptor while we do have it in the cache. There

      is a rare case when this can happen. Now, tor will recover and

      retry the descriptor. Fixes bug 28669; bugfix on 0.3.2.4-alpha.

    - Stop logging a "BUG()" warning and stacktrace when we find a SOCKS

      connection waiting for a descriptor that we actually have in the

      cache. It turns out that this can actually happen, though it is

      rare. Now, tor will recover and retry the descriptor. Fixes bug

      28669; bugfix on 0.3.2.4-alpha.

  o Minor bugfixes (periodic events):

    - Refrain from calling routerlist_remove_old_routers() from

      check_descriptor_callback(). Instead, create a new periodic event

      that will run once every hour even if Tor is not configured as

      onion router. Fixes bug 27929; bugfix on 0.2.8.1-alpha.

      check_descriptor_callback(). Instead, create a new hourly periodic

      event. Fixes bug 27929; bugfix on 0.2.8.1-alpha.

  o Minor bugfixes (pluggable transports):

    - Make sure that data is continously read from standard output and

      standard error pipes of a pluggable transport child-process, to

      avoid deadlocking when the a pipe's buffer is full. Fixes bug

      26360; bugfix on 0.2.3.6-alpha.

      avoid deadlocking when a pipe's buffer is full. Fixes bug 26360;

      bugfix on 0.2.3.6-alpha.

  o Minor bugfixes (unit tests):

    - Instead of relying on hs_free_all() to clean up all onion service

  o Code simplification and refactoring:

    - Reimplement NETINFO cell parsing and generation to rely on

      trunnel-generated wire format handling code. Closes ticket 27325.

    - Remove unnecessarily unsafe code from the Rust macro cstr!. Closes

    - Remove unnecessary unsafe code from the Rust macro "cstr!". Closes

      ticket 28077.

    - Rework SOCKS wire format handling to rely on trunnel-generated

      parsing/generation code. Resolves ticket 27620.

  o Documentation:

    - Mention that you cannot add a new onion service if Tor is already

      running with Sandbox enabled. Closes ticket 28560.

    - Improve ControlPort deocumentation mention that it accepts

    - Improve ControlPort documentation. Mention that it accepts

      address:port pairs, and can be used multiple times. Closes

      ticket 28805.

    - Document the exact output of "tor --version". Closes ticket 28889.