Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.115:
  - Updated the "forcedownload" command/message of the Geant4 build;
  - Added a build of SQLite to the standalone releases for Python;
  - Upgraded all releases to LCG_100_ATLAS_7, so that the CI would use that from now on;
  - Upgraded GeoModel to hash ff0b07aa;
  - Upgraded flake8 to version 3.9.2;
  - Removed stomp.py.