* Start migration to TVDB v4 api
* Incomplete migration
* Migration P2
* Migration push Part 3. Used my fork of TVDbSharper
* Migration Part 4
* Bug fixes
* Done Migration
* Removed redundant searchbyremoteid function
* Fixed Incorrect retrieval of episodeId
* Updated to use a more reliable way of converting ISO 639-2 to ISO 639-1
* Fixed TvdbSeriesProvider
* Fixed actors info and removed unneeded GetImages
* Removed unneeded api calls when getting season and series images.
* Changed to just convert from ISO 639-1 to ISO 639-2
* Switched to use GetCultureInfo instead of constructing
* TvdbMissingEpisodeProvider is now working some of the times
* Fixed TvdbMissingEpisodeProvider to work properly
* Remove some unneeded Api calls
* Added Content Rating retrieval
* Fixed missing season number for absolute in GetEpisodeTvdbId
* Added PR #91 fix
* Added suggested changes
* Add TvdbCultureInfo. Dupe of iso6382.txt from Jellyfin repo
* Added Country info
* Preliminary switch to tvdb-sdk-csharp
* Fixed csproj grouping
* Fixed login bug
* Re-add check for AverageRuntime for null
* Removed maxSeasonNumber in TvdbSeriesProvider
* Update to tvdb-sdk-csharp to 4.7.9
* Change to Tvdb.Sdk.dll
* Fixes series.AirDays assignment
* Comments
* Added Suggested changes and removed commented out code
* Removed IsValidEpisode function
* Refactor to use HttpClientFactory
