16d6925022
See https://www.thunderbird.net/en-US/thunderbird/68.1.0/releasenotes/ and https://www.thunderbird.net/en-US/thunderbird/68.0/releasenotes/ for the full releases notes Fixes https://www.mozilla.org/en-US/security/advisories/mfsa2019-28/ and https://www.mozilla.org/en-US/security/advisories/mfsa2019-29/ (not yet up, but probably similar to mfsa2019-26 for firefox-esr 68.1.0) Update to 68.1.0 now so that we can track releases for 6.6-stable.