Rust feature/rls

[bglid]

Description

Adds RLS algorithm port.

Changes

• Creates and adds RLS algorithm to Rust crate and Python bindings. New file rls.rs + full pipeline to export python bindings.
• Adds RLS related tests to test_filters.py and test_bindings.py in parameterized tests
• Adds two new Error values in error.rs that are specific to RLS algorithm
• Fixes mysterious rollback to float64 in fd_filter_model.py that causes warning.
• Updates update_step() to be &mut self since RLS has a mutable state in the form of it's p_matrix containing previous history. Updates tests for Lms and Nlms alongside.

Questions requesting check on:

• Use of single unwrap() in update_step() appropriate and checked?
• is switching update_step() to mut actually fine here? Any considerations?

Related Issue

Part of #307

[bglid]

Thanks again for doing that. Going to revert Delta to stop being a newtype for now and also change the name as discussed with a few other minor changes. I can take a look at the TODOs too (like switching KalmanGain's new() for WindowSize). Then I can update docs.

[elnaske]

This is a great improvement over the previous version. Just the few things I mentioned, then we can merge. I had a couple other nitpicks about the docs, but we can address those when in #311

[bglid]

This is a great improvement over the previous version. Just the few things I mentioned, then we can merge. I had a couple other nitpicks about the docs, but we can address those when in #311

Ayy thank you. The help and guidance was greatly appreciated. Learned a lot through this one with regard to Rust so I appreciate your patience lol. Should be all set now addressing those last points.

[elnaske]

Thanks, merging