[firebase-release] Removed change log and reset repo after 3.7.0 release

Author: google-oss-bot

CHANGELOG.md

@@ -1,20 +0,0 @@
-- Adds `functions.logger` SDK to enable structured logging in the Node.js 10 runtime. For example:
-
-  ```js
-  const functions = require('firebase-functions');
-
-  functions.logger.debug('example log with structured data', {
-    uid: user.uid,
-    authorized: true,
-  });
-  ```
-
-- Adds a special require that mimics Node.js 8 runtime logging in Node.js 10 and later runtimes:
-
-  ```js
-  require('firebase-functions/lib/logger/compat');
-  ```
-
-  In newer runtimes, requiring this will emit text logs with multi-line support and appropriate severity. In the Node.js 8 runtime, the `compat` module has no effect.
-
-- Fixes `https.onRequest` type signature to allow Promises for `async` functions.