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.Tests/Parser/ParserTest.cs

@@ -171,6 +171,8 @@ namespace API.Tests.Parser
         [InlineData("TEST/Love Hina - Special.jpg", false)]
         [InlineData("__macosx/Love Hina/", false)]
         [InlineData("MACOSX/Love Hina/", false)]
+        [InlineData("._Love Hina/Love Hina/", true)]
+        [InlineData("@Recently-Snapshot/Love Hina/", true)]
         public void HasBlacklistedFolderInPathTest(string inputPath, bool expected)
         {
             Assert.Equal(expected, HasBlacklistedFolderInPath(inputPath));