artifacts-20200118-bp154.1.22

- update to v20200118
  * 10 months worth of artifact additions

- Switch to build and distribution under python3 as py2 is obsolete

- update to v20190320
  * 9 months worth of artifact additions

- Compact description for size. Wrap it, too.

- Fixed invalid source file (mismatching hash)
- Added GPG source verification

- Cleaned up spec file
  * Use license macro
  * Dropped defattr as it is not required anymore, recent rpms
    add a default defattr line if none is present in the rpm files
    section
- Update to 20180628

- initial version 20150409 in OBS