Sentinel 0.16 introduces several feature enhancements that improve the development experience for policy authors. The release unifies the policy authoring workflow by including HCL support and expanding the standard imports, allowing for standardized policy configuration syntax, central policy management, and new import in the Sentinel standard library. This update enables easier evaluation of policies, simplifies the process of managing policies from a central source, and supports definitions of remote sourced policies and modules, which encourages code reuse. Additionally, a new version import is included, providing policy authors with the ability to parse versions and version constraints, supporting both arbitrary versions and versions that follow the semver.org specification. The update aligns Sentinel with other HashiCorp products and provides seamless authoring, mocking, and testing of Sentinel policies.