v0.3.0

Environment data source (#33)

* init commit for env data source

* update

* update

* add more attributes

* fix diags issue

* add more attributes

* collaborators email attribute

* raw_json attribute

* initial grains attribute

* finish grain source attribute

* env doc

* update markdown

* fix lint

* final touches, update doc, rmeove redundant code and fix small bugs

* fixes

* small doc update

* typo

* doc update

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Co-authored-by: Amir Rashkovsky <amir.r@quali.com>