Have project use the new memory model

[twyatt]

https://blog.jetbrains.com/kotlin/2021/08/try-the-new-kotlin-native-memory-manager-development-preview/

Evaluate if:

• any atomics can be replaces with raw types
• usages of Stately can be replaced by Tuulbox's SynchronizedMap
  • Stately spins up a thread on JVM target for handling isolated operations, we're also not disposing of these when done with them

To do:

• [ ] Update project readme gradle instructions