Bump version to 4.0.0b0

Author: pnbruckner

custom_components/composite/manifest.json

@@ -4,9 +4,9 @@
   "codeowners": ["@pnbruckner"],
   "config_flow": true,
   "dependencies": ["file_upload"],
-  "documentation": "https://github.com/pnbruckner/ha-composite-tracker/blob/3.6.0/README.md",
+  "documentation": "https://github.com/pnbruckner/ha-composite-tracker/blob/4.0.0b0/README.md",
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/pnbruckner/ha-composite-tracker/issues",
   "requirements": ["filetype==1.2.0"],
-  "version": "3.6.0"
+  "version": "4.0.0b0"
 }