Merge branch 'release/1.2.0' into develop
Post Release: Version 1.2.0 -> 1.2.1dev.
Add passing of config to plugin constructor.

Backwards-compatible API change. Needs the minor version of
PythonCollector bumped when it is merged. Currently targeting 1.3.
All collect method to return defer.succeed(None).

Backwards-compatible API change. Will require bumping the ZenPack's
minor version when it's merged. Currently targeting 1.3.
Allow ds_dp syntax for data['values'][c] keys.

Allows for multiple datasources with datapoints by the same name. This
is a backwards-compatible API change that will require bumping the
ZenPack's minor version when it's merged. Currently targeting 1.3.
Make constructor config backwards-compatible.
Finished release alpha2.
Finished release alpha2.
Merge pull request #1 from zenoss/feature/apic-support

Please review branch feature/apic-support
Update the example values to reflect 1.3-isms
Merge pull request #2 from zenoss/feature/13docUpdates

Please review branch feature/13docUpdates
Merge branch 'feature/apic-support' into develop
Merge branch 'develop' of https://github.com/zenoss/ZenPacks.zenoss.PythonCollector into develop
Release: Version 1.2.1dev -> 1.3.0.
Release: Document 1.3.0 changes.

Also added changes for all previous releases because they were
previously undocumented.
Merge branch 'release/1.3.0'