Update package.json

Author: BlobMaster41

package.json

@@ -8,7 +8,7 @@
     "assemblyscript",
     "wasm"
   ],
-  "version": "0.29.0",
+  "version": "0.29.1-beta.0",
   "author": "Daniel Wirtz <dcode+assemblyscript@dcode.io>",
   "license": "Apache-2.0",
   "homepage": "https://assemblyscript.org",