feat: SignatureRef::actor() to more easily compare name and email. (#…

…427)

Comparing anything with actual timestamps will of cause fail eventually
and make tests flaky.

git-actor/src/signature/mod.rs

@@ -1,5 +1,5 @@
 mod _ref {
-    use bstr::ByteSlice;
+    use bstr::{BStr, ByteSlice};
 
     use crate::{signature::decode, Signature, SignatureRef};
 
@@ -29,6 +29,11 @@ mod _ref {
                 time: self.time,
             }
         }
+
+        /// Return the actor's name and email, effectively exclusing the time stamp of this signature.
+        pub fn actor(&self) -> (&BStr, &BStr) {
+            (self.name, self.email)
+        }
     }
 }