feat: Bump version

The CAWG Signing has been completely changed. Therefore this is a
breaking change.

Author: cdmurph32

package.json

@@ -4,7 +4,7 @@
     "type": "git",
     "url": "git+https://github.com/contentauth/c2pa-node-v2.git"
   },
-  "version": "0.1.3",
+  "version": "0.2.0",
   "description": "Node.js bindings for C2PA",
   "main": "dist/index.js",
   "types": "dist/types/index.d.ts",