* fix(package): update mongodb to version 3.1.0
* chore(package): update lockfile
https://npm.im/greenkeeper-lockfile
* starting mongo 3.1.0, read preferences are passed again
* Adds test confirming #4831 is properly functional now
* Use node 8 as development environment
* fixup! Use node 8 as development environment
* bump node to 8.10
* Targets node 8 for everything
* Run npm install so lock file is up to date
* Use push adapter v3
* Deflake a test on ParseUser
* Adds slight delay after logout
* Ensure we wait even if call fails
* Use node carbon
