Update dependencies.

Author: davidlehn

package.json

@@ -33,7 +33,7 @@
   "dependencies": {
     "rdf-canonize": "^0.2.1",
     "request": "^2.83.0",
-    "semver": "^5.4.1",
+    "semver": "^5.5.0",
     "xmldom": "0.1.19"
   },
   "devDependencies": {
@@ -42,9 +42,9 @@
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-preset-env": "^1.6.1",
     "babel-preset-node6-es6": "^11.2.5",
-    "browserify": "^15.0.0",
+    "browserify": "^15.2.0",
     "chai": "^4.1.2",
-    "commander": "^2.12.2",
+    "commander": "^2.13.0",
     "core-js": "^2.5.3",
     "cors": "^2.7.1",
     "express": "^4.16.2",
@@ -68,7 +68,7 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-tap-reporter": "0.0.6",
     "karma-webpack": "^2.0.5",
-    "mocha": "^4.1.0",
+    "mocha": "^5.0.0",
     "mocha-lcov-reporter": "^1.3.0",
     "regenerator-runtime": "^0.11.1",
     "webpack": "^3.7.1",