Added support for binary data types

- Select data type (string, json, hex, uint, int, float) for each topic individually
- Default data type is 'string'
- Show milliseconds in message received timestamp

package.json

@@ -1,6 +1,6 @@
 {
   "name": "MQTT-Explorer",
-  "version": "0.4.0-beta1",
+  "version": "0.4.0-beta4",
   "description": "Explore your message queues",
   "main": "dist/src/electron.js",
   "scripts": {
@@ -119,4 +119,4 @@
     "yarn-run-all": "^3.1.1"
   },
   "optionalDependencies": {}
-}
+}