* Rewrote the section to be minimalist and not specify the number of ways to provide feedback. Also removed the PR info since that's covered in Contributing.
* Update feedback.md
Got feedback from Leo about how to improve on this and make it conform to the style guide. Updated with changes based on that feedback.
* spell out HPC acronym in explanation doc
* update toolchain docs
order in importance descending
* update Contributing guide
add discussions
update formatting and grammar
* separate contributing section for readability
* fix formatting for mdl
* fix spelling