851dcd5bf7
Fixes #257 Use make-fetch-happen for the download step. This lib will use `PROXY` and `HTTPS_PROXY` and `NO_PROXY` env vars out of the box. Additionally we'll try and get proxy config from npm. Unfortunately, the most straightforward options is to call npm config to do this, since npm config is not easily extracted as a lib and we don't want to replicate the resolution mechanisms.