updating version to 0.4.1

Author: Fernando Escolar

package.json

@@ -2,7 +2,7 @@
     "name": "vscode-solution-explorer",
     "displayName": "vscode-solution-explorer",
     "description": "Visual Studio .sln file explorer for Visual Studio Code",
-    "version": "0.4.0",
+    "version": "0.4.1",
     "license": "CC-BY-SA-4.0",
     "publisher": "fernandoescolar",
     "icon": "images/icon.png",