Build against all python3 versions available
In case there are multiple python3 versions shipped in a give Ubuntu release, columbus needs to provide a compiled _columbus module for each of them.
This will need at least:
* change the python3-dev build-depend to python3-all-dev
* build against each available one (using either dh_python3 or CMake support)
|Changed in libcolumbus:|
|importance:||Undecided → Low|