Release 0.3.0 - chore: bump version to 0.3.0 - build(scripts): add release.sh - refactor: use TpmHandle in the API - feat(cache): lookup live handles in find_by_name - feat(key): TryFrom<&VtpmKey> for Vec<u8> - refactor: rename save_context to save_key - feat: address live handles with Tpm2bName - fix(cache): remove from disk after removing keys - feat: save policy as Vec<Box<dyn VtpmPolicyCommand>> - refactor: store persistent map at construction - feat: VtpmPolicy - feat: pass TpmPolicy to save_context