* fix: apply automatic eslint fixes
* lint: allow hashbang comment for tiddlywiki.js
* lint: first back of manual lint fixes for unused vars
* lint: added more fixes for unused vars
* lint: missed files
* lint: updated eslint config with selected rules from #9669
* Add action-setmultiplefields and setmultiplevariables, and extend action-sendmessage
* Add getfield operator
* Remove getfield operator
See discussion at https://github.com/Jermolene/TiddlyWiki5/pull/6130#issuecomment-949911439
* Add docs
* Adjust whitespace
* Add support for assigning multiple indexes to action-setmultiplefields