Latest commit 3edb499 Feb 24, 2017 @zertosh zertosh committed with facebook-github-bot Update to flow 0.40.0
Summary: https://github.com/facebook/flow/releases/tag/v0.40.0

Reviewed By: vjeux

Differential Revision: D4610143

fbshipit-source-id: 7e09c83d7a7988d959c08cd087600601207180c9