Add official support for Python 3.13 (#113)

Add official support for Django 5.1 (no code change) (#114)

Make preheader context aware and fix related tests (#110)

Add a dashboard with email previews (#92)

Introducing a way to access a dashboard with all available email classes
used in the project.
---------

Co-authored-by: Johannes Maron <johannes@maron.family>

Bump ruff from 0.6.5 to 0.6.7 (#108)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.6.5 to 0.6.7.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ruff/releases">ruff's
releases</a>.</em></p>
<blockquote>
<h2>0.6.7</h2>
<h2>Release Notes</h2>
<h3>Preview features</h3>
<ul>
<li>Add Python version support to ruff analyze CLI (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13426">#13426</a>)</li>
<li>Add <code>exclude</code> support to <code>ruff analyze</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13425">#13425</a>)</li>
<li>Fix parentheses around return type annotations (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13381">#13381</a>)</li>
</ul>
<h3>Rule changes</h3>
<ul>
<li>[<code>pycodestyle</code>] Fix: Don't autofix if the first line ends
in a question mark? (D400) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13399">#13399</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>Respect <code>lint.exclude</code> in ruff check
<code>--add-noqa</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13427">#13427</a>)</li>
</ul>
<h3>Performance</h3>
<ul>
<li>Avoid tracking module resolver files in Salsa (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13437">#13437</a>)</li>
<li>Use <code>forget</code> for module resolver database (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13438">#13438</a>)</li>
</ul>
<h2>Install ruff 0.6.7</h2>
<h3>Install prebuilt binaries via shell script</h3>
<pre lang="sh"><code>curl --proto '=https' --tlsv1.2 -LsSf
https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-installer.sh
| sh
</code></pre>
<h3>Install prebuilt binaries via powershell script</h3>
<pre lang="sh"><code>powershell -ExecutionPolicy ByPass -c &quot;irm
https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-installer.ps1
| iex&quot;
</code></pre>
<h2>Download ruff 0.6.7</h2>
<table>
<thead>
<tr>
<th>File</th>
<th>Platform</th>
<th>Checksum</th>
</tr>
</thead>
<tbody>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-aarch64-apple-darwin.tar.gz">ruff-aarch64-apple-darwin.tar.gz</a></td>
<td>Apple Silicon macOS</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-aarch64-apple-darwin.tar.gz.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-x86_64-apple-darwin.tar.gz">ruff-x86_64-apple-darwin.tar.gz</a></td>
<td>Intel macOS</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-x86_64-apple-darwin.tar.gz.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-aarch64-pc-windows-msvc.zip">ruff-aarch64-pc-windows-msvc.zip</a></td>
<td>ARM64 Windows</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-aarch64-pc-windows-msvc.zip.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-i686-pc-windows-msvc.zip">ruff-i686-pc-windows-msvc.zip</a></td>
<td>x86 Windows</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-i686-pc-windows-msvc.zip.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-x86_64-pc-windows-msvc.zip">ruff-x86_64-pc-windows-msvc.zip</a></td>
<td>x64 Windows</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-x86_64-pc-windows-msvc.zip.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-aarch64-unknown-linux-gnu.tar.gz">ruff-aarch64-unknown-linux-gnu.tar.gz</a></td>
<td>ARM64 Linux</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-i686-unknown-linux-gnu.tar.gz">ruff-i686-unknown-linux-gnu.tar.gz</a></td>
<td>x86 Linux</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-i686-unknown-linux-gnu.tar.gz.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-powerpc64-unknown-linux-gnu.tar.gz">ruff-powerpc64-unknown-linux-gnu.tar.gz</a></td>
<td>PPC64 Linux</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-powerpc64le-unknown-linux-gnu.tar.gz">ruff-powerpc64le-unknown-linux-gnu.tar.gz</a></td>
<td>PPC64LE Linux</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256">checksum</a></td>
</tr>
<tr>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-s390x-unknown-linux-gnu.tar.gz">ruff-s390x-unknown-linux-gnu.tar.gz</a></td>
<td>S390x Linux</td>
<td><a
href="https://github.com/astral-sh/ruff/releases/download/0.6.7/ruff-s390x-unknown-linux-gnu.tar.gz.sha256">checksum</a></td>
</tr>
</tbody>
</table>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md">ruff's
changelog</a>.</em></p>
<blockquote>
<h2>0.6.7</h2>
<h3>Preview features</h3>
<ul>
<li>Add Python version support to ruff analyze CLI (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13426">#13426</a>)</li>
<li>Add <code>exclude</code> support to <code>ruff analyze</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13425">#13425</a>)</li>
<li>Fix parentheses around return type annotations (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13381">#13381</a>)</li>
</ul>
<h3>Rule changes</h3>
<ul>
<li>[<code>pycodestyle</code>] Fix: Don't autofix if the first line ends
in a question mark? (D400) (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13399">#13399</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>Respect <code>lint.exclude</code> in ruff check
<code>--add-noqa</code> (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13427">#13427</a>)</li>
</ul>
<h3>Performance</h3>
<ul>
<li>Avoid tracking module resolver files in Salsa (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13437">#13437</a>)</li>
<li>Use <code>forget</code> for module resolver database (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13438">#13438</a>)</li>
</ul>
<h2>0.6.6</h2>
<h3>Preview features</h3>
<ul>
<li>[<code>refurb</code>] Skip
<code>slice-to-remove-prefix-or-suffix</code> (<code>FURB188</code>)
when non-trivial slice steps are present (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13405">#13405</a>)</li>
<li>Add a subcommand to generate dependency graphs (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13402">#13402</a>)</li>
</ul>
<h3>Formatter</h3>
<ul>
<li>Fix placement of inline parameter comments (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13379">#13379</a>)</li>
</ul>
<h3>Server</h3>
<ul>
<li>Fix off-by one error in the <code>LineIndex::offset</code>
calculation (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13407">#13407</a>)</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>[<code>fastapi</code>] Respect FastAPI aliases in route definitions
(<a
href="https://redirect.github.com/astral-sh/ruff/pull/13394">#13394</a>)</li>
<li>[<code>pydocstyle</code>] Respect word boundaries when detecting
function signature in docs (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13388">#13388</a>)</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>Add backlinks to rule overview linter (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13368">#13368</a>)</li>
<li>Fix documentation for editor vim plugin ALE (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13348">#13348</a>)</li>
<li>Fix rendering of <code>FURB188</code> docs (<a
href="https://redirect.github.com/astral-sh/ruff/pull/13406">#13406</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/astral-sh/ruff/commit/17c4690b5ead2872ed8035d9a03a2af0cb0a1fa1"><code>17c4690</code></a>
Bump version to v0.6.7 (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13439">#13439</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/f06d44e6e5cea8d83b904ed06dcbf721fcd3bc5f"><code>f06d44e</code></a>
Use <code>forget</code> for module resolver database (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13438">#13438</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/653c09001a7fb09324c101fd669c9568d047d82c"><code>653c090</code></a>
Use an empty vendored file system in Ruff (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13436">#13436</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/8921fbb54cda836d76b08e8187f757b58ad739ef"><code>8921fbb</code></a>
<code>vendored_typeshed_versions</code> should use
<code>db.vendored</code> (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13434">#13434</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/3018303c8759b3e96d075c62eeb8b8ef24b4d0c3"><code>3018303</code></a>
Avoid parsing with Salsa (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13437">#13437</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/6c303b24455f26ff08859affc080e43e1206ea6c"><code>6c303b2</code></a>
red-knot: Add not unary operator for boolean literals (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13422">#13422</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/7579a792c75265c1299ca95bf6d1458d7cc56c81"><code>7579a79</code></a>
Add test coverage for non-Python globs (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13430">#13430</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/0bbc13803768c97af9be783e692cd2c45c1175a9"><code>0bbc138</code></a>
Upgrade to latest <code>cargo-dist</code> version (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13416">#13416</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/ff11db61b40958fb39cfa6b53004614bd74087b3"><code>ff11db6</code></a>
Add Python version support to ruff analyze CLI (<a
href="https://redirect.github.com/astral-sh/ruff/issues/13426">#13426</a>)</li>
<li><a
href="https://github.com/astral-sh/ruff/commit/2823487bf8021ac81be0e8c4825731f87ccacb0a"><code>2823487</code></a>
Respect <code>lint.exclude</code> in ruff check <code>--add-noqa</code>
(<a
href="https://redirect.github.com/astral-sh/ruff/issues/13427">#13427</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/astral-sh/ruff/compare/0.6.5...0.6.7">compare
view</a></li>
</ul>
</details>
<br />


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Do not track external domains to prevent CWE-601 (#107)

Support redirect on absolute pathes without domain name (#105)

We send Emails with URLs without a domain name or schema. There should
be no harm in redirecting them, since we can assume that they are to the
safe request domain.

Add tracking to all URL in an email, regardless of the domain

Fix #96 -- Override contect manager to lazy open SMTP connections (#100)

Fix #97 -- Properly parse domain names in markdown links (#98)

The problem is described in #97.

I had to introduce a library -
[tldextract](https://github.com/john-kurkowski/tldextract/) to properly
parse all varieties of domain names.

---------

Co-authored-by: Johannes Maron <johannes@maron.family>