Feature/added filter by severity option (salesforce#295)

* severity field on json output and option to filter results by severity

* fix type in option filter severity

* generate new example report

* add new dependencies to setup

* -f option on scan_policy_file and scan_multi_account and "critical" and "none" as options

* remove added dependencies

* removed js dependencies, fixed unit tests for new output format

* revert package-lock and fix mypy issues

* fix typo

More gamelift cred vending actions (salesforce#286)

Update version.py

Ability to return json results when used as python lib (salesforce#250)

* Modified 'scan_account_authorization_details' in '/cloudsplaining/command/scan,oy' to return raw json results along with rendered_html report string. Also added a parameter 'return_json_results' to the function to make it backward compatible.
Returning json along can be helpful in programatically analysing results and taking further actions when used as python library.

* Update the typo in return type of scan_account_authorization

* Update README.md

Co-authored-by: Kinnaird McQuade <kmcquade@users.noreply.github.com>

AWS_DEFAULT_PROFILE is respected; made formatting updates; made some …

…path fixes that should help the windows issues (salesforce#239)

Update package.json

Fix handling of Deny NotAction statements (salesforce#220)

Return empty list of effective actions instead of a None object when a statement uses NotActions with an effect of Deny

Future proof some unit tests that were failing (salesforce#227)

Fix typo

Update requirements.txt