feat: introduce v4 signed url

package.json

@@ -56,6 +56,7 @@
     "async": "^2.0.1",
     "compressible": "^2.0.12",
     "concat-stream": "^2.0.0",
+    "dateformat": "^3.0.3",
     "duplexify": "^3.5.0",
     "extend": "^3.0.0",
     "gcs-resumable-upload": "^1.0.0",
@@ -78,6 +79,7 @@
     "@types/compressible": "^2.0.0",
     "@types/concat-stream": "^1.6.0",
     "@types/configstore": "^4.0.0",
+    "@types/dateformat": "^3.0.0",
     "@types/extend": "^3.0.0",
     "@types/mime": "^2.0.0",
     "@types/mime-types": "^2.1.0",
@@ -88,6 +90,7 @@
     "@types/proxyquire": "^1.3.28",
     "@types/pumpify": "^1.4.1",
     "@types/request": "^2.47.1",
+    "@types/sinon": "^7.0.10",
     "@types/through2": "^2.0.33",
     "@types/tmp": "0.0.34",
     "@types/uuid": "^3.4.4",
@@ -101,6 +104,7 @@
     "intelli-espower-loader": "^1.0.1",
     "jsdoc": "^3.5.4",
     "jsdoc-baseline": "git+https://github.com/hegemonic/jsdoc-baseline.git",
+    "linkinator": "^1.1.2",
     "mocha": "^6.0.0",
     "nock": "^10.0.1",
     "node-fetch": "^2.2.0",
@@ -109,10 +113,10 @@
     "power-assert": "^1.4.4",
     "prettier": "^1.7.0",
     "proxyquire": "^2.0.0",
+    "sinon": "^7.3.0",
     "source-map-support": "^0.5.6",
     "tmp": "^0.1.0",
     "typescript": "~3.3.0",
-    "uuid": "^3.1.0",
-    "linkinator": "^1.1.2"
+    "uuid": "^3.1.0"
   }
 }