This tag addresses the v78 Thunderbird branch.
As always, test and feedback will be very appreciated.
🎨 Fixes some blemishes
🐛 Fixes wrong value type set for mail.collect_addressbook
🆕 Enables some previously commented-out options related to RSS feeds
🆕 Incorporates some hardening from CHEF-KOCH/TBCK (abandoned?) project (52d0864)
🆕 New referenced related project !