Added
- Multiple channels can now have the same name and use a common episode counter [25](https://github.com/Senth/youtube-series-downloader/issues/25)
- This is useful when a content creator has multiple channels but you want to put them
into the same series.
- Quits application if configuration is missing required settings
- `series_dir = /media/series` under `[General]`
- `id = youtube_channel_id` under `[Channel Name]`
Fixed
- If quitting the application in the middle of a render ffmpeg would get stuck next time
since you had to confirm the replacement of the file