Update in-memory-http-listener to the latest version 🚀#3

greenkeeper[bot] wants to merge 2 commits intomasterJamesKyburz/google-cloud-function-http-server:masterfrom

greenkeeper/in-memory-http-listener-0.1.13JamesKyburz/google-cloud-function-http-server:greenkeeper/in-memory-http-listener-0.1.13Copy head branch name to clipboard