Input Union: Evaluation cleanup (#652)

* Evaluation cleanup

* Update rfcs/InputUnion.md

Co-Authored-By: Ivan Maximov <[email protected]>

* Add demonstration for order based

* More emojii

* eval A; collapse variation examples

* fix details

* more evaluations and cleanup

* emojii everything

* inline demonstration

* Add evaluation tables

* Fill out eval tables

* complete eval of C

* evalutate F

* hr not needed

* eval emojii

* evaluate H

* evaluate J

* Add 2 new criteria

* emojii for criteria

* re-introduce the evaluation grid

* increase all headers

* emoji swap

* evaluate E

* evaluate D

* evaluate I

Author: binaryseed