chore(package): update lerna-changelog to version 0.7.0 (#349)

Author: greenkeeper[bot]

package.json

@@ -63,7 +63,7 @@
     "istanbul": "^1.1.0-alpha.1",
     "istanbul-combine": "^0.3.0",
     "lerna": "^2.0.0-beta.38",
-    "lerna-changelog": "^0.6.0",
+    "lerna-changelog": "^0.7.0",
     "live-server": "^1.2.0",
     "mocha": "^4.0.0",
     "nyc": "^11.0.2",