update packages

Author: arve0

package-lock.json

@@ -6,7 +6,6 @@
   "scripts": {
     "postinstall": "node check.js",
     "preversion": "npm test",
-    "prepublish": "npm test",
     "postpublish": "git push && git push --tags",
     "test": "mocha test/test.js"
   },
@@ -26,16 +25,16 @@
   },
   "homepage": "https://github.com/arve0/metalsmith-pandoc",
   "dependencies": {
-    "async": "^2.0.0-rc.2",
-    "debug": "^2.1.0",
+    "async": "^2.5.0",
+    "debug": "^3.1.0",
     "multimatch": "^2.1.0",
-    "pdc": "cherbst/node-pdc",
+    "pdc": "^0.2.3",
     "system-install": "^1.0.0",
-    "which": "^1.0.8"
+    "which": "^1.3.0"
   },
   "devDependencies": {
-    "assert-dir-equal": "^1.0.1",
-    "metalsmith": "^2.1.0",
-    "mocha": "^2.1.0"
+    "assert-dir-equal": "^1.1.0",
+    "metalsmith": "^2.3.0",
+    "mocha": "^4.0.1"
   }
 }