* fix(extras.go): remove unneeded formatters since gopls handles them * add optional back
* FEATURE: use none-ls instead of null-ls Fixes #1516 * fix(none-ls): automatically migrate null-ls to none-ls * feat(config): show warning if user config contains renamed references --------- Co-authored-by: Folke Lemaitre <folke.lemaitre@gmail.com>