Bump version to 0.2.0

Breaking: JrxNode is now a union type (JrxElement | null | undefined),
isJrxNode renamed to isJrxElement.

Co-authored-by: Ona <no-reply@ona.com>

.github/workflows/publish.yml

@@ -21,6 +21,6 @@ jobs:
 
       - run: bun test
 
-      - run: bunx npm publish --provenance --access public
+      - run: bun publish --access public --provenance
         env:
           NPM_CONFIG_REGISTRY: https://registry.npmjs.org