Async file reading

[cpetry]

Is your feature request related to a problem? Please describe. I would like to read in a file/stream asynchronously

Describe the solution you'd like An async method returning a Task (ideal with progress callback)

Describe alternatives you've considered Synchronous reading on file or I/O based is not as nice.

Additional context

[DomCR]

Hi @cpetry,

I'll open a branch to see how can this be implemented in the project.

Thanks!