snapshot
Merge branch 'devel' into feature/type_checking
merging...
start to add call sigs -- seems to work, actually :-)  Lets see what it does to performance though...
snapshot
snap
merge with stash
snapshot
merge from devel
merge from feature/resource
resolve some logical merge conflicts.
snapshot, core classes done
merge from devel
more type checks, small fixes

There are no type checks on utils, yet -- not sure if those are needed / useful / ...
Otherwise the tests are complete for the API layer AFAICS.
merge
add simple signature test
merge from devel
fix run_job signature
merge from devel
sync with devel changes -- tests pass again