03/09/20 -v1
18/09/20 - v2 + 774 users' corrections
27/09/20 - v3 improved geometry
05/11/20 - v4 + 202 users' corrections
28/12/20 - v5 + 110 users' corrections
10/06/21 - v5 + 402 users' corrections
18/09/21 - v6 + 125 users' corrections
07/10/21 - v7 + 30 users' corrections
13/11/21 - v8 + 50 users' corrections
02/12/21 - v9 + 20 users' corrections