Expose the playbook to callback plugins
Improvements to the rax inventory script
Output URL for debugging
Add version_compare filter
fixed error related to type being defined as a number
Allow isprintable() util function to work with unicode

Fixes #6842
Add support for shared module documentation fragments
Use PluginLoader for module docs fragments
Use common file argument system previously implemented by @sivel for rax modules on the file modules as well (copy/file/template).
Application to other cloud providers would make very good sense.
Merge pull request #5555 from sivel/expose-playbook-to-callback

Expose the playbook to callback plugins
Merge pull request #6603 from sivel/rax-inventory-improvements

rax.py inventory script improvements
Merge pull request #6835 from sivel/version-compare-filter

Add version_compare filter
rax modules improvements

* Catch issues with invalid regions
* Ensure we send string only data as meta values in the rax module
* Add public_key/lookup example for rax_keypair
* Clean up import statements
Update changelog
Fix for #6353 adding a newline between assembled files
assemble module: fix insertion of newlines when not needed.

This builds on GH-6359 and changes the logic so that a newline is only inserted between fragments if the previous fragment does not end with a newline.
Adding delimiter fixes to action_plugin + fixing local assembling with a delimiter

Also added a new integration test for assemble using local assembly
with a delimiter.
Clarify free_form isn't a real option :)
Merge pull request #6793 from muffl0n/patch-4

apt_key: Output URL for debugging
Merge pull request #6849 from atlashealth/ec2_snapshot_fixed_type_issue

ec2_snapshot: fix for "unknown type number requested for wait_timeout"