Add fallback to GTop (#70)

Add GNOME 49 support

Mark compatible with GNOME Shell 48 (#60)

* Mark compatible with GNOME Shell 48

* Bump version to 29

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Co-authored-by: Sergei Kolesnikov <sergei@kolesnikov.se>

Mark compatible with GNOME Shell 47 (#57)

* Mark compatible with GNOME Shell 47
* Bump version to 28

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Co-authored-by: Sergei Kolesnikov <sergei@kolesnikov.se>

Add GNOME 46 support

Get rid of extension getter

Make private fields in prefs to be garbage collected on window close

Port to ESM (#46)

Version 23

Add GNOME 44 support; bump to version 22