the sources in Build/source/texk/lcdf-typetools seem to be a bit old
(2.79), while Eddie has released 2.82 already. Do we have the current
sources somewhere already?
0) Not yet.
1) I don't try to keep every package up to date between our releases.
That would waste a lot of time.
2) Peter and Eddie are working on eliminating some of the
autodifferences.