Update to v0.21.0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "circletone",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "peerDependencies": {
     "@angular/common": "^17.3.0",
     "@angular/core": "^17.3.0"