I can't believe it's more fixes! (#863)

* Send stack trace to the UI on prod mode

* Pdfs will now generate cover images. I missed something a few releases ago.

* Ignore @Recently-Snapshot directories for QNAP.

* Refactored Bitmap code to use ImageSharp so it's truly cross platform.

* Updated pdf extraction to use a multi-threaded approach to greatly speed up pdf image extraction

* Hooked in Characters tag from ComicInfo.xml

API/Services/MetadataService.cs

@@ -113,6 +113,14 @@ public class MetadataService : IMetadataService
                 person => PersonHelper.AddPersonIfNotExists(chapter.People, person));
         }
 
+        if (!string.IsNullOrEmpty(comicInfo.Characters))
+        {
+            var people = comicInfo.Characters.Split(",");
+            PersonHelper.RemovePeople(chapter.People, people, PersonRole.Character);
+            PersonHelper.UpdatePeople(allPeople, people, PersonRole.Character,
+                person => PersonHelper.AddPersonIfNotExists(chapter.People, person));
+        }
+
         if (!string.IsNullOrEmpty(comicInfo.Translator))
         {
             var people = comicInfo.Translator.Split(",");
@@ -220,7 +228,6 @@ public class MetadataService : IMetadataService
     {
         if (series == null) return;
 
-        //var firstFile = series.Volumes.FirstWithChapters().Chapters.Fir
         if (!_cacheHelper.ShouldUpdateCoverImage(_directoryService.FileSystem.Path.Join(_directoryService.CoverImageDirectory, series.CoverImage),
                 null, series.Created, forceUpdate, series.CoverImageLocked))
             return;