Changes between #80 and #81

#81 (Aug 9, 2022, 9:47:33 AM)

1. Concurrency version updated (commit: 2d15075) — Jan Westerkamp / detail
2. Validation version updated (commit: 5ed19bd) — Jan Westerkamp / detail
3. doublet version definition removed (commit: 8fd4514) — Jan Westerkamp / detail