Bumped dependencies to the latest version

package.json

@@ -67,9 +67,9 @@
     "arr-flatten": "1.0.3",
     "array-unique": "0.3.2",
     "async-retry": "1.1.1",
-    "ava": "0.19.1",
+    "ava": "0.20.0",
     "babel-core": "6.25.0",
-    "babel-loader": "7.1.0",
+    "babel-loader": "7.1.1",
     "babel-plugin-transform-async-to-generator": "6.24.1",
     "babel-plugin-transform-runtime": "6.23.0",
     "babel-preset-es2015": "6.24.1",
@@ -83,7 +83,7 @@
     "deployment-type": "1.0.1",
     "docker-file-parser": "1.0.2",
     "dotenv": "4.0.0",
-    "download": "6.2.3",
+    "download": "6.2.4",
     "email-prompt": "0.3.1",
     "email-validator": "1.0.7",
     "epipebomb": "1.0.0",
@@ -101,8 +101,8 @@
     "ms": "2.0.0",
     "node-fetch": "1.7.1",
     "ora": "1.3.0",
-    "pkg": "4.1.0",
+    "pkg": "4.1.1",
-    "prettier": "1.4.4",
+    "prettier": "1.5.2",
     "printf": "0.2.5",
     "progress": "2.0.0",
     "psl": "1.1.19",