Update toml and changelog for release

Bump version for new release

Fix Bug and add Demo Gif

When no files are present the app tried to focus a ListItem
Handled that and focused he New-File Button instead

Bump version in toml

Fix Test and gh-actions py ver in matrix test

🐛 FIX CSS issues

Some modals and buttons were cutoff, when zoom was too much.
Also replaced relative imports and made some small text
adjustments

🐛 FIX CI with .python-version file

🔖 New Release Bugfix +

Add Notifications on Button Interaction

Fix InvalidID Identifier and Bump Version to 0.1.3