No, Scala 3 is not supported, final answer
Scala 3 is supported
Update versions, note lack of Scala 3 support
Updated Installation (markdown)
Revert 9b29eb4abb05148ad33480dc26c948dc1b2adfd9^ ... 9b29eb4abb05148ad33480dc26c948dc1b2adfd9 on Installation
Updated Installation (textile => markdown)