Merge tag 'v2.0.4' into develop

Bump version to 2.0.4

Author: ivankravets

platform.json

@@ -12,7 +12,7 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-espressif8266.git"
   },
-  "version": "2.0.3",
+  "version": "2.0.4",
   "packageRepositories": [
     "https://dl.bintray.com/platformio/dl-packages/manifest.json",
     "http://dl.platformio.org/packages/manifest.json",