Update a bunch of other deps.

package.json

@@ -25,7 +25,7 @@
     "start": "node examples/server.js",
     "test": "npm run lint && npm run test-node && npm run test-browser",
     "test-browser": "cross-env NODE_ENV=test karma start",
-    "test-node": "cross-env NODE_ENV=test mocha --compilers js:babel-register tests.node.js"
+    "test-node": "cross-env NODE_ENV=test mocha --require babel-register tests.node.js"
   },
   "authors": [
     "Ryan Florence",
@@ -58,25 +58,25 @@
     "babel-preset-stage-1": "^6.13.0",
     "babel-register": "^6.11.6",
     "bundle-loader": "^0.5.4",
-    "codecov": "^2.1.0",
-    "cross-env": "^3.2.4",
+    "codecov": "^3.0.0",
+    "cross-env": "^5.1.3",
     "css-loader": "^0.27.3",
     "eslint": "^3.2.0",
     "eslint-config-rackt": "^1.1.1",
     "eslint-plugin-react": "^6.2.2",
     "expect": "^1.20.2",
     "express": "^4.14.0",
     "express-urlrewrite": "^1.2.0",
-    "gzip-size": "^3.0.0",
-    "karma": "^1.1.2",
+    "gzip-size": "^4.1.0",
+    "karma": "^2.0.0",
     "karma-browserstack-launcher": "^1.0.1",
     "karma-chrome-launcher": "^2.0.0",
     "karma-coverage": "^1.1.1",
     "karma-mocha": "^1.1.1",
     "karma-mocha-reporter": "^2.0.5",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^2.0.3",
-    "mocha": "^3.2.0",
+    "mocha": "^5.0.4",
     "pretty-bytes": "^4.0.2",
     "qs": "^6.2.1",
     "react": "^16.0.0-rc",