Version 1.1.0 stable release for py35+

This is a marker-in-the-sand release for charmhelpers and marks
the 1.1.x series for py35+.

The release numbering is:

1.0.x == py27 + py34
1.1.x == py35+
1.2.x == py36+
1.3.x == py37++
etc.

This release was taken from the master branch.

Version 1.0.0 stable release for py27

This is a marker-in-the-sand release for charmhelpers and marks
the 1.x series for py27.

The release numbering is:

1.0.x == py27 + py34
1.1.x == py35+
1.2.x == py36+
1.3.x == py37++
etc.

This release was taken from the stable/py27 branch.

Release 0.20.24

Release version v0.20.23

Release for v0.20.22

Set cmd_env for trusty and xenial only (juju#573)

Only set the command environment for the supported releases which require it.

Co-authored-by: David Ames <david.ames@canonical.com>

v0.20.20 release

Release v0.20.19

Release v0.20.18

Release v0.20.17 to PyPi