fix: papaparse must have gone missing during rebase

package.json

@@ -27,6 +27,7 @@
     "@types/jest": "^24.0.11",
     "@types/jquery": "^1.10.35",
     "@types/node": "^8.0.31",
+    "@types/papaparse": "^4.5.9",
     "@types/react": "^16.7.6",
     "@types/react-dom": "^16.0.9",
     "@types/react-grid-layout": "^0.16.6",
@@ -188,6 +189,7 @@
     "mousetrap": "^1.6.0",
     "mousetrap-global-bind": "^1.1.0",
     "nodemon": "^1.18.10",
+    "papaparse": "^4.6.3",
     "prismjs": "^1.6.0",
     "prop-types": "^15.6.2",
     "rc-cascader": "^0.14.0",