set theory v2, now can handle non hashable items like dicts
changed exception handling for hashable test
now unique actually works, all operations also now use it to return
unique lists.
template Runner.module_vars['delegate_to'] to accommodate callbacks
if python >=2.7  use the option allow_no_value=True for ini_file.
Merge branch 'sets_v2' of https://github.com/bcoca/ansible into bcoca-sets_v2
Merge branch 'bcoca-sets_v2' into devel
Merge branch 'callback_template_delegate' of https://github.com/sergevanginderachter/ansible into sergevanginderachter-callback_template_delegate
Merge branch 'sergevanginderachter-callback_template_delegate' into devel
(A) Fix a bug in the doc generator that was clobbering the force parameter for the copy module.

(B) This is a work in progress but the idea is to have text snippets where we can respond to tickets with a bit more helpful info.
Not active just yet.
Explain ticket stubs
Update ISSUE_TEMPLATE.md

Make issue template slightly more verbose.
File common arguments should not be used in all docs pages.
Move doc fragments back into file module.
Resolve option conflict differently.
Some stray doc tweaks with file modules.
Merge pull request #8455 from nicocesar/version_check

if python >=2.7  use the option allow_no_value=True for ini_file.