Don't offer prereleases

StabilityMatrix/Models/Packages/A3WebUI.cs

@@ -117,10 +117,11 @@ public class A3WebUI : BaseGitPackage
         if (isReleaseMode)
         {
             var allReleases = await GetAllReleases();
-            return allReleases.Select(r => new PackageVersion {TagName = r.TagName!, ReleaseNotesMarkdown = r.Body});
+            return allReleases.Where(r => r.Prerelease == false).Select(r => new PackageVersion
+                {TagName = r.TagName!, ReleaseNotesMarkdown = r.Body});
         }
-        else // branch mode
-        {
+
+        // else, branch mode
         var allBranches = await GetAllBranches();
         return allBranches.Select(b => new PackageVersion
         {
@@ -128,7 +129,6 @@ public class A3WebUI : BaseGitPackage
             ReleaseNotesMarkdown = string.Empty
         });
     }
-    }
 
     public override async Task InstallPackage(IProgress<ProgressReport>? progress = null)
     {