v4.1.0

• fixed incompatibility with Thunderbird 96 (#279)
• Re-added support for Thunderbird Conversations add-on (#203)
• show proper error message on ill-formed from (#238)
• ignore ill-formed List-Id (#262) and fix parsing of List-Id
• Authentication-Results header: fixed sorting of DKIM results in regards to list id
• fixed options styling for Thunderbird 91
• added Brazilian Portuguese translation (by David BrazSan) (#283)
• Add ability to export/import sign rules (#220)
• Fix layout issues in table views (Sign rules / stored keys) (#248)
• updated default rules and favicons (#263, #266, #274, #281, #284)