Separate analysis and synthesis

[PieterPenninckx]

This pull request separates the analysis from the synthesis. The purpose is to enable things like time stretching.

[nwoeanhinnogaehr]

Haven't had a chance to look at this in detail yet, but I'm fully supportive of this change! This would greatly expand the use cases. Thanks!

[PieterPenninckx]

Thank you for your kind words and for reviewing my pull requests!

I would like to try out the proposed API myself in order to test it and this may take some time, but I got distracted by other things, so it may take a while longer. So here are some things we can do:

• Just keep the PR open a little longer. There aren't many people contributing to this crate, so this probably doesn't block anybody.
• Remove the pub keyword for the new structs. This would allow us to change the API later and then it wouldn't be a breaking change.

What do you think about it?

[nwoeanhinnogaehr]

My sincere apologies for forgetting about this! I'm thinking what would be best is either to keep the PR open, or to merge it onto a new branch. Then when things are done I can merge with the master branch. Up to you.

[PieterPenninckx]

@nwoeanhinnogaehr , no worries. The limiting factor is the amount of time I have. I think we'll just leave the PR open. When I have validated that the API is ergonomic, I can let you know that it's ready for review and if I notice some usability problems, I can still push commits.