Clean up for v1

- Removed CM support. Utilize `highlight` function with CM directly if you wish to use this
- Removed lineNumbers support, this may be added in later if a universal way of handling it is found
- Simplified extensions, loadScript support was removed, extensions need to load their own resources
- Removed Mermaid support, this can be added later as an external extension
- Upgraded `marked` from 0.6.2 to 2.1.1 and added to peer dependencies
- Removed `findLanguage` option, now just assumes anything unknown is a language

Author: jhoffner

.changeset/stupid-worms-jam.md

@@ -0,0 +1,12 @@
+---
+"@codewars/marked-extensions": major
+---
+
+Clean up for v1
+
+- Removed CM support. Utilize `highlight` function with CM directly if you wish to use this.
+- Removed lineNumbers support, this may be added in later if a universal way of handling it is found
+- Simplified extensions, loadScript support was removed, extensions need to load their own resources
+- Removed Mermaid support, this can be added later as an external extension
+- Upgraded `marked` from 0.6.2 to 2.1.1 and added to peer dependencies
+- Removed `findLanguage` option, now just assumes anything unknown is a language