Edn support

[stelcodes]

I added an alias for clojure, "edn", so edn tagged markup will get the syntax highlighting as clojure. I also added a markup test using the deps.edn file from babashka. I definitely need some review and advice because this is my first contribution. Very new to the code base. Ran npm run build_and_test and all the tests passed. I couldn't get npm run test or npm run test-markup to run, however. Getting Error: Cannot find module '../build' errors.

Resolves #3205

Changes

Added "edn" to clojure aliases, added edn markup test

Checklist

• Added markup tests, or they don't apply here because...
• Updated the changelog at CHANGES.md

[joshgoebel]

npm run test or npm run test-markup

Because you must build first before you can run tests.

I also added a markup test using the deps.edn file from babashka.

Awesome, but is there a smaller file that still would show that everything works? Large markup tests only make reviews harder when large changes to a grammar may happen later. If a 10-20 line EDN file would show that this works just as effectively then it would be much preferred.

Otherwise this looks good. Still need the changelog entry of course.

[stelcodes]

Hey @joshgoebel should I update the version 11 changelog? Something like this under Grammars:?
- enh(clojure) added `edn` alias (#3213) [Stel Abrego][]
Should I squash the commits into one with that name?

Also, I built and the tests are working as they should. Thanks!