Undo __future__ import for type annotations, which is incompatible with python 3.6

Closes #20

See merge request !94

Fix/aron conversions

See merge request !84

adding aron and armem functionalities from research repo

See merge request !79

fixed issue with file-paths in aron tests, which now allows to use the VS-Code extensions to run pytest unittests

added possibility to add memory entities etc. explicitly, after already having been created and not only using IDs

this now allows to save metadata into a json file using python

add tool to mirror trajectories (currently for ARMAR-6)

See merge request !92

Call new method abortAllSkills of skill manager instead of manually aborting all skills on their own

Feature/a7 integration

See merge request !91

Debug/fixing colli avo control crashing

See merge request !90

Merge branch 'debug/fixing_colli_avo_control_crashing' of git.h2t.iar.kit.edu:sw/armarx/python3-armarx into debug/fixing_colli_avo_control_crashing