patch(#104): fixes text selection for marked-up diff

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mergely",
-  "version": "4.0.13",
+  "version": "4.0.14",
   "description": "A javascript UI for diff/merge",
   "directories": {
     "doc": "doc",
@@ -40,7 +40,7 @@
     "babel-loader": "^8.0.4",
     "babel-plugin-syntax-dynamic-import": "^6.18.0",
     "chai": "^4.1.2",
-    "codemirror": "^5.32.0",
+    "codemirror": "^5.50.2",
     "copy-webpack-plugin": "^4.6.0",
     "css-loader": "^0.28.11",
     "file-loader": "^1.1.5",