Using
```
assert 'changed' in result
```
doesn't actually check if something is changed, which is presumably
the reason for the assertion. What is actually needed is
```
assert result.get('changed')
```
which checks that changed is set and not False. Tests still pass after
this change

Fix checking for existence of EC2 tags

authorized_key module: rewrite options to dict parser, fixes #5032

Fixed hostname module for RHEL6 Workstation

Implement ansible.module_utils.rax

Added `-y` flag to `query_package`

Exit 0 with no matched hosts

New library/cloud/ec2 module parameter (assign_public_ip) for non-default VPC instance launching.

Fix "manual" ansible-playbook example in guide_vagrant.rst

The given example is trying to load an inventory file with the -i option, so it should probably be given the actual Vagrant-written inventory file name. I contemplated using 'vagrant_ansible_inventory_default' instead (which is what my Vagrant demo actually creates) but 'vagrant_ansible_inventory_machinename' is more consistent with the existing example in the docs.

Add PyPi version badge.

Fix for documentation playbook loops

mention that the mount module will remove mount directories

Fixes #5081

Correct the invocation of ‘_assemble_from_fragments’

Code to limit display of version_added attributions in modules for modules that are too old to call out this information.

This does not generically apply to new arguments added to existing modules, just the version_added attribute on the top level modules.

Revert "No longer need to reference 'version_added' in docs for these, as this was quite a while ago."

This reverts commit ff0a41d4.

Docs: Fix the module formatter code that is intended to remove the 'historical' variable from showing up in version_added information (RST)

Avoid a traceback when using accelerate

fix heading name syntax in AWS guide

This bit of code is attempting to access accelerate_inventory_host,
which may not have been set/created. This will cause a traceback.
Instead use getattr with a fallback to False.

Fixes #5064

Fix AWS credential params for ec2_ami, ec2_elb, ec2_tag, ec2_vpc, route53, and s3 modules

if key is used with lookup parameter needs quotes as
otherwise it will load "ssh-rsa" "<the key>" "<the comment>" as separate
values and fail with "this module requires key=value arguments"

fixed documentation typo about region purpose

if key is used with lookup parameter that needs to be in quotes as
otherwise it will load "ssh-rsa" "<the key>" "<the comment>" as separate
values and fail with "this module requires key=value arguments"