• dillonkearns/elm-review-html-to-elm (elm-review version of html-to-elm.com)
• Rule naming guidelines docs
• Elm review cli new rule command
• stil4m/elm-syntax
• Elm.Syntax.Range
• elm-review ignoreErrorsForFiles
• Review context
• withFinalModuleEvaluation
• elm-review's context is like Model, elm-syntax Node is like a Msg, Review Errors are Cmds, visitors are like update
• elm-review's new configuration errors API
• Import aliases feature: ModuleNameLookupTable
• Parse, don't validate episode
• elm-review Fixes API
• Jeroen's Safe Unsafe Operations blog post

Getting startedSome repos to look at for inspiration

• github.com/jfmengels/elm-review-unused
• github.com/jfmengels/elm-review-common
• github.com/jfmengels/elm-review-debug
• github.com/jfmengels/elm-review-simplify

The elm-review package docs are very through and worth reading