df8471a bump version to 4.1.0
18539f2 ignore webextension/web-ext-artifacts
7c1105a Change (un)install changes to only work for >57. Fixes #858 and Fixes #900
3129814 when user reaches container tab count, show achievement panel
4e6eee2 start containerTabsOpened counter
a7be3c9 TextEncoder/TextDecoder from Cu.importGlobalProperties - #949
8166a37 add steps for signing, AMO, and GitHub to README