Increase error handling in the unlikely case of failing to establish a connection.
Restore authors file
Type checking on library/apt means the upgrade parameter is now properly True/False
Update changelog to include recent modifications.
Update get_url

Small syntactic correction: Removed trailing double-quote from example.
slurp: import base64 as module_common no longer does
host.get_variables includes too many variables, use host.vars instead

Not quite as attractive, but allows variable precedence and lazy
resolution to work as intended, rather than resolving them on a
per-inventory basis.
Merge pull request #2271 from MWGriffin/patch-1

Update get_url
Fix parse_kv invocation in group_by to use imported name

Fixes #2277.
Revert "for #2196 now gruopby module invalidates host cached variables so they can be reevaluated with new groups"

This reverts commit 2d86671aa5b0fcdabe35f88fc5e09197acd3f17d.
group_by needs the untemplated module_args
Revert "Revert "for #2196 now gruopby module invalidates host cached variables so they can be reevaluated with new groups""

This reverts commit dc0515a88a8aa78630f0b7118563c7a23c898839.

We didn't need to revert this :)
Update doc reference to clarify that $item isn't expanded here.
YAML requires quoting the entire value when it starts with a quote

Fixes #2280.