Cfripper

Improvements
- Upgraded to pycfmodel 0.8.1 (this will improve policy action detection)
- Refactored a few classes to use improvements from new base classes and pycfmodel
- `PrivilegeEscalationRule` now detects issues in all policies
Additions
- New Rules: `SNSTopicDangerousPolicyActionsRule` and `SQSDangerousPolicyActionsRule`
- New abstract base rule: BaseDangerousPolicyActions
Fixes
- Various typo fixes

Improvements
- Added more actions that only allow wildcard as resource
Fixes
- Require pycfmodel 0.7.2
Other
- Bump pip-tools dev requirement to 5.3.1

Improvements
- Add `WildcardResourceRule` rule

Improvements
- Add `regex:ignorecase` filter function

Improvements
- Add support for this new S3 url format: `https://bucket.s3.aws-region.amazonaws.com/path1/path2`

Breaking changes
- `rule_mode` is now `BLOCKING` for all Rules.