Bump to v4

Preparing for adding support to v3.5 and above

src/utils/migrations/instances/migration.ts

@@ -4,6 +4,7 @@ import { InstanceV5 } from './v5'
 import { InstanceV6 } from './v6'
 import { InstanceV7 } from './v7'
 import { InstanceV8 } from './v8'
+import { InstanceV9 } from './v9'
 
 const instancesMigration = {
   4: (state: InstanceV3): InstanceV4 => {
@@ -87,6 +88,17 @@ const instancesMigration = {
         }
       })
     }
+  },
+  9: (state: InstanceV8): { instances: InstanceV9[] } => {
+    return {
+      // @ts-ignore
+      instances: state.instances.map(instance => {
+        return {
+          ...instance,
+          version: '0'
+        }
+      })
+    }
   }
 }