⚡ Release 2.6.4 (#4287)

* ⚡ Release 2.6.4

* Marks port ENV var as PORT

* Fixes broken definitions

* Update CHANGELOG.md

* Update CHANGELOG.md

* Update CHANGELOG.md

src/Options/index.js

@@ -113,7 +113,8 @@ export interface ParseServerOptions {
   enableSingleSchemaCache: ?boolean; // = false
   /* Sets the number of characters in generated object id's, default 10 */
   objectIdSize: ?number; // = 10
-  /* The port to run the ParseServer. defaults to 1337. */
+  /* The port to run the ParseServer. defaults to 1337. 
+  :ENV: PORT */
   port: ?number; // = 1337
   /* The host to serve ParseServer on. defaults to 0.0.0.0 */
   host: ?string; // = 0.0.0.0