1) Small optimization of the regexp parser of #EXTINF directive data of the m3u playlist;
2) Changes have been made to the log output when there is no key file;
3) Added the ability to interrupt the process of receiving groups from the playlist when using bouquet customization in playlist settings ("red" or "exit" button during obtaining or processing the playlist) ... In this case, information about the interruption of this process by the user will be displayed in the log.
