0.9.1: Minimization improvements; logging fix; new --resource-type flag to Query command

• write-policy:
  • Minimization is improved by grouping results based on ARNs (#252)
• query:
  • --resource-type flag added to policy_sentry query action-table command (Fixes #255)
• Backend methods:
  • Added some utility functions (get_statement_from_policy_using_sid, get_sid_names_from_policy to make it easier to future-proof unit tests that rely on the ever-changing AWS IAM data.
  • Bug fix for get_actions_for_service (Fixes #245)
  • Bug fix for create_policy_sid_namespace (Fixes #266)
• logging
  • Bug fix for logging not working (Fixes #268)