Update min required firefox version

1.3.2

update strict min version to 58

Prefs page - dark theme, allow user to play back sound cue

1.3.1

version 1.3.1

User selectable sounds and additional filtering options

1.3.0

update min firefox version

Fix "restore defaults" button

#15

1.0.8

• #12 add audio cues for notifications
• #14 update ff logo to latest

1.0.7

#11

1.0.6

#10

1.0.5

Totally revamp configuration backend; implement feature for issue #8;…

1.0.4

version 1.0.4

Bug fixes for 1.0.3

Extra download notification #6
Firefox icon should be updated #5