long due, was ready in november 2022 and basically left unchanged at
that stage, except the deprecation of veracrypt in the experimental
portable branch, which is not included in the stable release.
this new "flavor" of tomb uses veracrypt for mounted volumes and
POSIX sh only for its scripting, is a work in progress and still
lacks full functionality, but provides a proof-of-concept to be
developed further if needs arise.