Keyz 0.4.0 Release

If you have .NET Core 3.1 Runtime installed, Please use win-x64.zip
If you don't want to install .NET Core 3.1 Runtime, Please use win-x64-independent.zip

ApplicationData.db contains all your personal data. Please backup this file regularly.
Please be ware that there is a breaking change between 0.2.0 and 0.3.0, ApplicationData.db cannot be shared.

Changelog:

1. Keyz new only remains in as a notification icon, It will not show in task bar.
2. Add context menu for icon so you can right click and close Keyz.
3. Use EventAggregator to trigger window state change when click buttons with mouse.
4. Use system command to change window state instead of changing window state manually.