feat(freeze): no authors in the config, no author check

A repository that takes commits from people it cannot list has no way
to freeze a range today: a null `authors` falls back to
`git config user.email`, so every foreign author or committer fails.
Null, or no key, now means neither is checked; the freeze warns that it
did not check them and records `authors` as null. A list is checked as
before. An empty list, which no commit could pass, is a config error
that points at null.
Released as 1.1.0.

packaging/flatpak/net.catcrafts.CrafterReview.metainfo.xml

@@ -27,6 +27,14 @@
   </provides>
   <content_rating type="oars-1.1"/>
   <releases>
+    <release version="1.1.0" date="2026-11-02">
+      <description>
+        <p>New</p>
+        <ul>
+          <li>Leaving <code>authors</code> out of the config turns the freeze's author and committer check off, where it used to check <code>git config user.email</code>. An empty list is a config error.</li>
+        </ul>
+      </description>
+    </release>
     <release version="1.0.1" date="2026-11-02">
       <description>
         <p>Fixes</p>