[firebase-release] Removed change log and reset repo after 0.2.1 release

Author: laurenzlong

CHANGELOG.md

@@ -1,11 +1 @@
-- `wrap` method now accepts `resource` as override in Context object, example:
 
-  ```
-  const wrapped = test.wrap(require("../src/index").myFirestoreFunction);
-  wrapped(data, {
-    resource: {
-      name: ""projects/my-project/databases/(default)/documents/users/user-123",
-    },
-  });
-  ```
-