eliminate the need for pyo3-asyncio

[sansyrox]

This will require us to handle the

• runtime
• async event loop

Benefits include

• better performance

[sansyrox]

@VishnuSanal

[VishnuSanal]

ref:

https://github.com/emmett-framework/granian/blob/master/src/runtime.rs

https://github.com/emmett-framework/granian/blob/master/src/callbacks.rs

[VishnuSanal]

I am working on this!