Add rmtrailingws

micro/settings.json

@@ -16,6 +16,7 @@
         "https://github.com/10sr/editorconfig-micro/raw/master/channel.json"
     ],
     "pluginrepos": [],
+    "rmtrailingws": true,
     "ruler": true,
     "savecursor": false,
     "saveundo": false,