v0.0.3

• Enable manifest apply override
  (https://www.pivotaltracker.com/story/show/153614649)

• Emit a warning if a stable line version is selected
  (https://www.pivotaltracker.com/story/show/152785169)

• Include multiple versions of nginx

  • Two versions of each supported line 1.12.x and 1.13.x
  • Allow version specified as "mainline" and "stable" in nginx.yml
    (https://www.pivotaltracker.com/story/show/152785099)

• Create executable to run nginx.conf through templating
  (https://www.pivotaltracker.com/story/show/152685309)
  Packaged binaries:

name	version	cf_stacks
nginx	1.12.1	cflinuxfs2
nginx	1.12.2	cflinuxfs2
nginx	1.13.7	cflinuxfs2
nginx	1.13.8	cflinuxfs2

Default binary versions:

name	version
nginx	1.13.x

• Uncached buildpack SHA256: 980c011df7e20305d7163b9cff2ee759b0eee9bc121889974de733f52cc0163d