chore: release 0.13.0

[github-actions]

🤖 I have created a release *beep* *boop*

0.13.0 (2021-10-05)

Features

• Port to OCaml 4.12 (#408) (34f04af)
• Relax the client/server coupling & Add support for API versioning (#426) (3113861)
• Make server version available to front-ends (learn-ocaml-client & learn-ocaml.el) (#429) (d607281)
• Generate static binaries directly from a GitHub Action (Linux, macOS) (#391) (ff9f091)
• Make the prelude available in description page (#393) (51ed717)
• Improve description entrypoint (#423) (a825d7e)
• Add a ppx facility to test expressions (#403) (526bc07)
• Make find_binding match annotated declarations (#425) (b277b38)
• UI: Discourage redundant token creation from users (#410) (83630d5)
• UI: Move the toplevel buttons to the bottom-right (#409) (90066d0)
• UI: Reset the toplevel every time before evaluating code from the editor (#411) (65ce0c42)
• UI: Improve UX for clickable logo (#389) (c406219)
• Add support for exercise code reuse (#320) (42d8127)
• Add VG in toplevel and exercises (#352) (1add7ba)

Bug Fixes

• CI: Use OCaml 4.12.1 (d5ece9b)
• Blacklist jsoo version 3.10.0 (#420) (2696f86)
• .ci-macosx.sh: Avoid { set -e; c1 && c2; } bug & Improve script (17a6703)
• .ci-macosx.sh: Install openssl (0a30b4f)
• dune: Avoid ANSI char issues in opam show … > VERSION (#394) (b72fa6c)
• UI: Fix the display of UTF-8 characters in the code editor (#412) (debb635)
• omd: Update the markdown-to-html transformation so links open a new tab (#392) (e0e3f2f)
• omd: Update override_url to avoid escape characters problems in URL (1e87190)
• Fix static deployment (#356) (1332c6e)
• Fix & Document static deployment CLI support (#368) (3cc2533)
• Fix learn-ocaml-client regression after PR #320 (#397) (5b16c92)
• Better error message for X-TOKEN registration (#406) (e27415c)
• CI: Add custom, curl-based wait_for_it (d910a6e)
• Docker: Fix runtime error in Docker packaging (a697edf)
• CI: Bump alpine version & Use ocaml/opam instead of ocaml/opam2 (7766698)
• CI: Workaround the static-bin-macos failure (#431) (064dafd)
• Use HTML5 Doctype (fe0fe8b)

Performance Improvements

• Remove redundant build step (2b3f25b)
• Learnocaml_main: Remove unneeded Markup.pretty_print (e5ce820)

Tests

• runtests.sh: Improve the script & Fix all shellcheck issues (5f4a6ac)

Continuous Integration

• CI/CD using GitHub Actions (#361) (bcecadd)
• GHA: Add a weekly build https://crontab.guru/#0_8_*_*_6 (63903f2)
• GHA: Enable cron build for static-builds.yml (6478085)
• GHA: Deploy ocamlsf/emacs-learn-ocaml-client:{master,$tags} (#433) (dce8f00)
• GHA: Ensure the uploaded artifacts are single .tar.gz files (#432) (adbb063)
• release.yml: Add a (3 jobs)-based GHA using release-please (#434) (7e389ef)

Documentation

• Document student answers classification (#421) (9b1a551)
• Fix docs issue #399 and unify the markdown syntax (276dac9)
• Make accessible the documentation generated by odoc (#404) (e10975f)
• docs/index.md: Update docker badges & ocaml-sf URL (7fce8a1)
• readme: s/HTTP/HTTPS/ (193df99)
• UI: Improve text details (#428) (017f049)

Miscellaneous Chores

• release 0.13.0 (f6b3b26)

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This PR was generated with Release Please. See documentation.

This issue description was then edited by @erikmd for more convenience, but this is optional (only the CHANGELOG.md file matters when the Release PR is merged).

[erikmd]

FYI @yurug I needed to do a manual pass on the generated Changelog because, in particular, not all commits (or Squashed PRs) followed the conventional-commits approach.
Also (but I didn't figure out because for now) I noticed that the docs: _ commits were not taken into account apparently; maybe that's an option − or an issue with the release-type: ocaml release-please implementation(?)

[github-actions]

🤖 Release is at https://github.com/ocaml-sf/learn-ocaml/releases/tag/v0.13.0 🌻