* update crate versions

* refactor

* small tweaks

* run cargo fmt

* fix comments

* remove unused code

* address clippy

Co-authored-by: Srinath Setty <srinath@microsoft.com>

* Test and fix solver CS::one() bug.

* Remove unused linear-combination evaluations.

* rustfmt

* Clippy.

Co-authored-by: porcuquine <porcuquine@users.noreply.github.com>