Dependency sorting (new algorithm, in progress)
Dependency sorting: import/export from/to lists.
Tests and fixes
Tests and fixes for Atd_sort. Good to go.
Replaced broken Atd_tsort with new Atd_sort.
Merge remote-tracking branch 'origin/master' into mj/sort
Version 1.1.2
Merge branch 'mj/sort', remote-tracking branch 'origin'