Log Message:
arti: update to version 1.1.3

Changelog:

# Arti 1.1.3 — 31 March 2023

Arti 1.1.3 continues our work on onion services.  We can now parse all
of the relevant message types, build circuits as needed to target
relays, build and sign onion service descriptors, and deliver onion service
requests to our `hsclient` code.

We've also solved a few annoying bugs, made our CI more bulletproof against
certain programming mistakes, and exposed a few APIs that had been missing
before elsewhere in our code.

### Major bugfixes

- Prevent a fatal error when finding a usable consensus in a read-only
  directory store. ([#779], [!1055])

### Breaking changes in lower level crates

- Moved futures-related utilities from `tor-basic-utils` to a new
  `tor-async-utils` crate. ([!1091])
- When the `expand-paths` Cargo feature is not enabled, we now reject
  paths in our configuration containing unescaped `$` and `~` strings.
  Previously we would treat them as literals, which would break
  when `expand-paths` was provided. ([#790], [!1069])

### Onion service development

- We now have working implementations for all of the message types that Tor
  uses to implement onion services. These are included in our fuzzing, and
  are cross-validated against the C Tor implementation. ([!1038], [!1043],
  [!1045], [!1052])
- Our onion service descriptor parsing code now validates the inner
  certificates embedded in the descriptors, for parity with C Tor's behavior.
  ([#744], [!1044])
- Refactor responsibility for HS circuit management out of `CircMgr`
  ([!1047])
- Revise APIs and outline implementations for the initial parts of a state
  manager and client implementation.  ([!1034], [!1086])
- Handle requests for `.onion` addresses by routing them to our onion service
  code.  (This code does not yet do anything useful.) ([!1060], [!1071],
  [!1098])
- Our circuit implementation now has APIs needed to send special-purpose
  messages and receive replies for them.  We'll use this to implement
  onion service handshakes outside of the `tor-proto` module. ([!1051])
- Implement functionality to pre-construct and launch circuits as needed for
  onion service directory, introduction, and rendezvous
  communications. ([#691], [!1065])
- Implement code to construct, encrypt, and sign onion service
  descriptors. ([#745], [!1070], [!1084])
- More work on usable APIs for HSDir ring. ([!1095])

### Infrastructure

- Add a new `check_env` script to detect whether the environment is set
  up correctly to build Arti. ([!1030])
- We have the beginnings of a `fixup-features` tool, to make sure that our
  "full" and "experimental" Cargo features behave in the way \ 
we expect,
  and eventually to enable us to use [`cargo-semver-checks`] on our
  non-experimental features only.  This tool is not yet ready for
  use; its semantics are subtly wrong. ([#771], [!1059])
- Our CI scripts now rejects merges containing the string
  "XX<!-- look, a squirrel -->XX";
  we use this string to indicate places where the code must be fixed
  before it can be merged. ([#782], [!1067])

### Testing

- More of our tests now specify times using [`humantime`] (rather than as
  a number of seconds since the Unix epoch). ([!1037])
- Our fuzzers now compile again.
  ([53e44b58f5fa0cfa], [!1063])

### Documentation

- New example code for building a `BridgeConfig` and launching a TorClient
  with bridges, without having a config file. ([#791], [!1074])

### Cleanups, minor features, and minor bugfixes

- Our `caret` macro now works correctly for uninhabited
  enumerations. ([841905948f913f73])
- Defend against possible misuse of [`tor_bytes::Reader::extract_n`].
  This wasn't a security hole, but could have become one in the
  future. ([!1053])
- Do not ask exits to resolve IP addresses: we already know the IP address
  for an IP address. ([!1057])
- Fix a bunch of new warnings from Rust 1.68. ([!1062])
- Expose builder for [`TransportConfigList`] as part of the public
  API. ([455a7a710917965f])
- Enforce use of blinded keys in places where they are required. ([!1081])
- Add accessors for the [`Blockage`] type, so other programs can
  ask what has gone wrong with the connection to the network. ([#800],
  [!1088]).

### Acknowledgments

Thanks to everybody who's contributed to this release, including
Alexander Færøy, Dimitris Apostolou, Emil Engler, Saksham Mittal, and
Trinity Pointard. Also, our welcome to Gabi Moldovan as she joins
the team!

Also, our deep thanks to [Zcash Community Grants] for funding the
development of Arti!