chore(package): update dependencies

https://greenkeeper.io/

package.json

@@ -17,16 +17,16 @@
     "url": "https://github.com/skratchdot/array-any-index"
   },
   "dependencies": {
-    "d3-interpolate": "^0.2.0",
+    "d3-interpolate": "^1.1.1",
     "get-object-type": "0.0.2"
   },
   "devDependencies": {
     "chai": "^3.4.1",
     "coveralls": "^2.11.4",
     "gulp": "^3.9.0",
-    "gulp-eslint": "^1.1.1",
-    "gulp-istanbul": "^0.10.3",
-    "gulp-mocha": "^2.2.0",
+    "gulp-eslint": "^3.0.1",
+    "gulp-istanbul": "^1.1.1",
+    "gulp-mocha": "^3.0.1",
     "isparta": "^4.0.0"
   },
   "tonicExampleFilename": ".tonic.example.js",