v1.7.8

• Add jruby 9.1.15.0, remove jruby 9.1.13.0
  (https://www.pivotaltracker.com/story/show/153491050)
  (https://www.pivotaltracker.com/story/show/152721520)

• Add node 4.8.7, remove node 4.8.6
  (https://www.pivotaltracker.com/story/show/153514063)

• Add node 6.12.2, remove node 6.12.0
  (https://www.pivotaltracker.com/story/show/153514063)
  (https://www.pivotaltracker.com/story/show/153407348)

• Adds bundler 1.16.0, removes bundler 1.15.4

  • Regenerates bundler binstub to account for incompatibility with Rails
    generated ones. See:
    • rails/rails#31193
    • rubygems/bundler#6149
  • binstubs are no longer modified; BUNDLE_GEMFILE is set instead
    (https://www.pivotaltracker.com/story/show/152452239)
    Packaged binaries:

name	version	cf_stacks
bundler	1.16.0	cflinuxfs2
jruby	ruby-1.9.3-jruby-1.7.26	cflinuxfs2
jruby	ruby-2.0.0-jruby-1.7.26	cflinuxfs2
jruby	ruby-2.3.3-jruby-9.1.15.0	cflinuxfs2
node	4.8.7	cflinuxfs2
node	6.12.2	cflinuxfs2
openjdk1.8-latest	1.8.0	cflinuxfs2
ruby	2.1.8	cflinuxfs2
ruby	2.1.9	cflinuxfs2
ruby	2.2.7	cflinuxfs2
ruby	2.2.8	cflinuxfs2
ruby	2.3.4	cflinuxfs2
ruby	2.3.5	cflinuxfs2
ruby	2.4.1	cflinuxfs2
ruby	2.4.2	cflinuxfs2
rubygems	2.6.13	cflinuxfs2
yarn	1.3.2	cflinuxfs2

Default binary versions:

name	version
ruby	2.4.2

• Uncached buildpack SHA256: 97c2f27c79fa702597e8de202dce7ca018d8a31e8640e6a6d54550f0890341a8