Release 2018.10.9

Signed-off-by: Dan Ryan <dan@danryan.co>

Add changelog, update documentation home screen

Signed-off-by: Dan Ryan <dan@danryan.co>

Remove news files (added to changelog)

Signed-off-by: Dan Ryan <dan@danryan.co>

calver

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

Version bump for bugfix release

Signed-off-by: Dan Ryan <dan@danryan.co>

Drop dependency on pathlib2

Signed-off-by: Dan Ryan <dan@danryan.co>

Bump version, update history

Signed-off-by: Dan Ryan <dan@danryan.co>

Capture package data

Signed-off-by: Dan Ryan <dan@danryan.co>

Merge pull request pypa#2049 from pypa/bugfix/2044-docker

Fix docker bug when using `--system`

Fix packages again

Signed-off-by: Dan Ryan <dan@danryan.co>