New: Improve Chinese language detection

src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs

@@ -108,6 +108,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("[abc] My Series - 01 [简繁外挂]")]
         [TestCase("[abc] My Series - 01 [简繁内封字幕]")]
         [TestCase("[ABC字幕组] My Series - 01 [HDTV]")]
+        [TestCase("[喵萌奶茶屋&LoliHouse] 拳愿阿修罗 / Kengan Ashura - 17 [WebRip 1080p HEVC-10bit AAC][中日双语字幕]")]
         public void should_parse_language_chinese(string postTitle)
         {
             var result = Parser.Parser.ParseTitle(postTitle);

src/NzbDrone.Core/Parser/LanguageParser.cs

@@ -17,7 +17,7 @@ namespace NzbDrone.Core.Parser
                 new RegexReplace(@".*?\.(S\d{2}E\d{2,4}\..*)", "$1", RegexOptions.Compiled | RegexOptions.IgnoreCase)
             };
 
-        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>\b(?:ita|italian)\b)|(?<german>german\b|videomann)|(?<flemish>flemish)|(?<greek>greek)|(?<french>(?:\W|_)(?:FR|VOSTFR)(?:\W|_))|(?<russian>\brus\b)|(?<dutch>nl\W?subs?)|(?<hungarian>\b(?:HUNDUB|HUN)\b)|(?<hebrew>\bHebDub\b)|(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕组)",
+        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>\b(?:ita|italian)\b)|(?<german>german\b|videomann)|(?<flemish>flemish)|(?<greek>greek)|(?<french>(?:\W|_)(?:FR|VOSTFR)(?:\W|_))|(?<russian>\brus\b)|(?<dutch>nl\W?subs?)|(?<hungarian>\b(?:HUNDUB|HUN)\b)|(?<hebrew>\bHebDub\b)|(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕)",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
         private static readonly Regex CaseSensitiveLanguageRegex = new Regex(@"(?<lithuanian>\bLT\b)|(?<czech>\bCZ\b)",