Miniflux 2.0.27 release notes

Add spellcheck="false" to input fields
Refactoring of entry, feed, category, and user validation
Avoid stripping tags for entry title
Add the possibility to subscribe to feeds with the Android Share menu
API improvements:
- Change feed creation request to allow setting most fields via API
- Allow regular users to change settings via API
- Make user fields editable via API
- Renaming non-existent category via API should return a 404
Update Systemd service file:
- Add capability CAP_NET_BIND_SERVICE (allow the process to listen on privileged ports)
- Enable a private /tmp for $CERT_CACHE (required when using Let’s Encrypt)
Update read/star icons to SVGs
Add autocomplete="username" to HTML forms
Improve user mass delete to use fewer Goroutines
Use SQL transaction when creating user sessions and users
Remove extra column (HSTORE field) from users table and migrate key/value pairs to specific columns
Bump github.com/prometheus/client_golang from 1.8.0 to 1.9.0
Bump github.com/lib/pq from 1.8.0 to 1.9.0
Add styles for <abbr> HTML tag
Refactor SQL migrations:
- Avoid embedding SQL files into binary
- Allow more flexible changes by using Go functions
Add Server-Timing header to unread page
Show correct User Agent in input placeholders
Add autocomplete attribute to login form
Add Grafana dashboard in contrib folder