Import queue from six.moves for python3 compatibility.

Add test requirements for working with v2.

Change how we're calling StringIO

Print function

Import StringIO from six in a couple more places.

Several more changes to support python3 syntax.

Fixed wrong example of 'environment' for setting PATH

Added an example for paretheses

Change exceptions to python3 syntax.

Add setup.py for v2 to allow for pip editable installs.

Fix re import failure in templates module when running unit tests.

Some grammatical updates

fix for when calling bootinfo throws permmission errors (AIX)

Fix --force-handlers, and allow it in plays and ansible.cfg

an ansible inventory garnered from fleetctl

Fixed changelog typos

Don't convert numbers and booleans to strings.

Before this change if a variable was of type int or bool and the variable was referenced
by another variable, the type would change to string.

eg. defaults/main.yml
```
PORT: 4567
OTHER_CONFIG:
  secret1: "so_secret"
  secret2: "even_more_secret"

CONFIG:
  hostname: "some_hostname"
  port: "{{ PORT }}"
  secrets: "{{ OTHER_CONFIG }}"
```

If you output `CONFIG` to json or yaml, the port would get represented in the output as a
string instead of as a number, but secrets would get represented as a dictionary.  This is
a mis-match in behaviour where some "types" are retained and others are not.  This change
should fix the issue.

Update template test to also test var retainment.

Make the template changes in v2.
Update to only short-circuit for booleans and numbers.

Added an entry to the changelog.

Tests for win_user module

The --force-handlers command line argument was not correctly running
handlers on hosts which had tasks that later failed. This corrects that,
and also allows you to specify force_handlers in ansible.cfg or in a
play.

backup_local now only tries to back up exising files, returns '' otherwise