Upgrade dependencies

package.json

@@ -32,23 +32,24 @@
     "rollup": ">= 1.0.0"
   },
   "dependencies": {
-    "chokidar": "^2.1.0",
+    "chokidar": "^3.0.2",
     "debounce": "^1.2.0"
   },
   "devDependencies": {
     "@babel/core": "^7.5.5",
     "@babel/plugin-transform-typescript": "^7.5.5",
     "@babel/preset-env": "^7.5.5",
-    "eslint": "^5.13.0",
-    "jasmine-core": "^3.3.0",
-    "karma": "^4.0.0",
-    "karma-chrome-launcher": "^2.2.0",
+    "eslint": "^6.0.1",
+    "jasmine-core": "^3.4.0",
+    "karma": "^4.2.0",
+    "karma-chrome-launcher": "^3.0.0",
     "karma-jasmine": "^2.0.1",
     "karma-mocha-reporter": "^2.2.3",
+    "rollup": "^1.17.0",
     "rollup-plugin-babel": "^4.3.3",
-    "rollup-plugin-buble": "^0.19.6",
-    "rollup-plugin-commonjs": "^9.2.0",
-    "rollup-plugin-node-resolve": "^4.0.0"
+    "rollup-plugin-buble": "^0.19.8",
+    "rollup-plugin-commonjs": "^10.0.1",
+    "rollup-plugin-node-resolve": "^5.2.0"
   },
   "author": "Julian Lloyd",
   "license": "MIT"