final fixes + changelist for 2.0.0!

- package: add adblock/adblock.gz to npm package
- electron: remove ./site/
- add CHANGES for 2.0.0

package.json

@@ -1,7 +1,7 @@
 {
   "name": "replaywebpage",
   "productName": "ReplayWeb.page",
-  "version": "2.0.0-beta.3",
+  "version": "2.0.0",
   "description": "Serverless Web Archive Replay",
   "repository": "https://github.com/webrecorder/replayweb.page",
   "homepage": "https://replayweb.page/",
@@ -70,7 +70,8 @@
     "/ruffle",
     "/sw.js",
     "/ui.js",
-    "/index.html"
+    "/index.html",
+    "adblock/adblock.gz"
   ],
   "scripts": {
     "build": "webpack --mode production && ./adblock/fetch-adblock.sh",