* Try to simplify open_plonk and fri_combine_initial a bit more
- Use `alpha.powers()` in `open_plonk` instead of the more "manual" approach
- No more "manually" reducing with `alpha_powers`; now using helper methods for that.
- Renaming & other small tweaks
* Remove type hint
* Feedback
* Draw challenge points from the extension field
* Now building
* Misc
* Default eval_unfiltered_base
* fmt
* A few field settings
* Add to Sage
* Display tweak
* eval_filtered_base
* Quartic in bench
* Missing methods
* Fix tests
* PR feedback