v1.6.6

• Add pipenv 9.0.1, remove pipenv 8.3.2
  (https://www.pivotaltracker.com/story/show/153704827)
  Packaged binaries:

name	version	cf_stacks
libffi	3.2.1	cflinuxfs2
libmemcache	1.0.18	cflinuxfs2
miniconda2	4.3.30	cflinuxfs2
miniconda3	4.3.30	cflinuxfs2
pip	9.0.1	cflinuxfs2
pip-pop	0.1.1	cflinuxfs2
pipenv	9.0.1	cflinuxfs2
python	2.7.13	cflinuxfs2
python	2.7.14	cflinuxfs2
python	3.3.6	cflinuxfs2
python	3.3.7	cflinuxfs2
python	3.4.6	cflinuxfs2
python	3.4.7	cflinuxfs2
python	3.5.3	cflinuxfs2
python	3.5.4	cflinuxfs2
python	3.6.2	cflinuxfs2
python	3.6.3	cflinuxfs2
setuptools	38.2.4	cflinuxfs2

Default binary versions:

name	version
python	2.7.14

• Uncached buildpack SHA256: 61984bc5502fcad2c967ae729ac680d8e64e8261bd354def342f2a7c46235fe5