FCCSW v0.13 (29/06/2020) Preparations for Key4HEP

This release collects some intermediary updates in preparation of the upcoming transition to key4hep.

PRs

• Python3 Compatibility in fccrun [#393](https://github.com/HEP--
  FCC/FCCSW/pull/393)
  • Update to LCG release 97_FCC_2 [#390](https://github.com/HEP-
  FCC/FCCSW/pull/390)
  • Add EvtGen Plugin to Pythia Interface. [#387](https://github.
  com//pull/387)
  • New Tracker Geometries: FCC-hh tilted and TrackerSimple
  #384
  • Add file used in the tutorial [#383](https://github.com/HEP-
  FCC/FCCSW/pull/383)
  • Remove AFS Paths in Tests [#385](https://github.com/HEP-FCC/
  FCCSW/pull/385)