v1.4.2

cf-buildpacks-eng released this 20 May 17:41

· 2426 commits to master since this release

Merge upstream changes from Heroku up to SHA 4b493f8
(https://www.pivotaltracker.com/story/show/94986118)
Add bundler version 1.9.7 to manifest
(https://www.pivotaltracker.com/story/show/94986118)

Assets 3