Update dependencies, .travis.yml with infection and add .editorconfig

Author: vukanac

.editorconfig

@@ -0,0 +1,27 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+
+[*.{json,lock,json.dist,xml}]
+indent_size = 4
+
+[*.js]
+indent_style = space
+indent_size = 2
+
+[Makefile]
+indent_style = tab
+indent_size = 4
+
+[{package.json,.travis.yml}]
+indent_style = space
+indent_size = 2