Adopt new monaco-editor-core

package-lock.json

@@ -640,9 +640,9 @@
       }
     },
     "monaco-editor-core": {
-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/monaco-editor-core/-/monaco-editor-core-0.11.1.tgz",
-      "integrity": "sha512-zbi+FI4Bm1B48AvAVjir0XUJlH85ZyFHaBcXvZjfy+mui8VaE7Run2ai/l9cvb6oqzTKQwg/UpYDu0BWyB8K5w==",
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/monaco-editor-core/-/monaco-editor-core-0.12.0.tgz",
+      "integrity": "sha512-wOoEVAoZtrarDRcQC32Fp0ocacpQd6/Nb0FmUZOHeD3swZuPZhDLOxTyoNLjKq3d+h/6g+IARBLnDaLT5OQD4g==",
       "dev": true
     },
     "monaco-plugin-helpers": {

package.json

@@ -20,7 +20,7 @@
   "devDependencies": {
     "jsdom-no-contextify": "^3.1.0",
     "mocha": "^3.4.2",
-    "monaco-editor-core": "0.11.1",
+    "monaco-editor-core": "0.12.0",
     "monaco-plugin-helpers": "^1.0.2",
     "requirejs": "^2.3.5",
     "typescript": "2.7.2",