Bump version to 3.0.0-dev

- Now requires mempool/electrs
- Mempool Accelerator integration
- Rust GBT integration
- And more!

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mempool-frontend",
-  "version": "2.6.0-dev",
+  "version": "3.0.0-dev",
   "description": "Bitcoin mempool visualizer and blockchain explorer backend",
   "license": "GNU Affero General Public License v3.0",
   "homepage": "https://mempool.space",
@@ -119,4 +119,4 @@
   "scarfSettings": {
     "enabled": false
   }
-}
+}