Tighten dependencies on metapackage, so that the right version of all packages will be pulled on update. (Closes: #980474)
The meta package freecad needs to have a (binNMU-all->any safe) Depends: on the freecad-python3 package.
The freecad-python3 pacakge needs (a binNMU any->any safe) versioned Depends: on freecad-common.
While on it, the libfreecad-python3-0.19 (<< ${binary:Version}+1~), libfreecad-python3-0.19 (>= ${binary:Version}), should be tightneded to just (= $(binary:Version)