ReactFire v4 release (#426)

* update firebase and rxfire

* remove experimental note on readme

Author: jhuleatt

README.md

@@ -3,12 +3,6 @@
 Hooks, Context Providers, and Components that make it easy to interact with
 Firebase.
 
----
-
-> **WARNING**: This branch is the work in progress for version 4 of ReactFire. [You can find version 3 here](https://github.com/firebaseextended/reactfire/tree/v3), if you're looking for documentation or to contribute to stable.
-
----
-
 ## What is ReactFire?
 
 - **Easy realtime updates for your function components** - Hooks
@@ -21,12 +15,12 @@ Firebase.
 
 ```bash
 # npm
-npm install --save reactfire@exp firebase@exp
+npm install --save firebase reactfire
 
 # or
 
 # yarn
-yarn add reactfire@exp firebase@exp
+yarn add firebase reactfire
 ```
 
 Depending on your targeted platforms you may need to install polyfills. The most commonly needed will be [globalThis](https://caniuse.com/#search=globalThis) and [Proxy](https://caniuse.com/#search=Proxy).
@@ -90,10 +84,6 @@ render(
 
 ---
 
-> If you're looking for docs for the _deprecated_ ReactFire v1 (the one that
-> uses mixins), click
-> [here](https://github.com/FirebaseExtended/reactfire/tree/v1.0.0)
-
 ## Status
 
 ![Status: Experimental](https://img.shields.io/badge/Status-Experimental-blue)

package.json

@@ -26,7 +26,7 @@
     "docs": "typedoc --options typedoc.json && markdown-toc -i docs/use.md"
   },
   "peerDependencies": {
-    "firebase": "9.0.0-2021720181311",
+    "firebase": "^9.0.0",
     "react": ">=16 || experimental"
   },
   "husky": {
@@ -81,7 +81,7 @@
     "babel-jest": "^26.6.3",
     "babel-plugin-minify-replace": "^0.5.0",
     "eslint-plugin-no-only-tests": "^2.6.0",
-    "firebase": "9.0.0-2021720181311",
+    "firebase": "^9.0.0",
     "firebase-tools": "^9.16.0",
     "globalthis": "^1.0.1",
     "husky": "^4.3.0",
@@ -99,7 +99,7 @@
     "typescript": "^4.2.4"
   },
   "dependencies": {
-    "rxfire": "6.0.0-rc.2",
+    "rxfire": "^6.0.0",
     "rxjs": "^6.6.3 || ^7.0.1"
   },
   "resolutions": {