Adding upstream version 0.45+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

README.md

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+<h1>
+  <img src="https://github.com/jpsca/jinjax/raw/main/jinjax-logo.png" height="50" align="top">
+</h1>
+
+From chaos to clarity: The power of components in your server-side-rendered Python web app.
+
+**Documentation:** https://jinjax.scaletti.dev/
+
+Write server-side components as single Jinja template files.
+Use them as HTML tags without doing any importing.
+
+
+## Roadmap
+
+#### Planned
+- [ ] Type checking at runtime
+- [ ] ...
+
+#### Done
+- [x] Slots
+- [x] Autoloading assets (optional?) (`Card.jinja` autoloads `Card.css` and/or `Card.js` if exists)