Hi, During the month of November I worked on the Thunderbird update after the toolchain update work for Firefox ESR 68 made that possible. I also spent time working on build fixes for Firefox (on armhf for jessie, as well as various other issues on stretch). Those will also benefit Thunderbird. That work was done on my own time.
For ELTS, I have spent 21h improving the security tracker to not hardcode supported releases across the tracker code. That will improve the maintainability of the tracker, as well as make it easier for third parties to add their own releases (such as ELTS itself). This work is in its review phase at this stage. Cheers, Emilio