Changes: * Code cleanups: unused code and refactored the code for reading read items from a plain-text URL file list. * Fix typos in the code and documentation. * Improve clarity of some code comments. * Add setsid example to the README.
Changes: * Code cleanups: unused code and refactored the code for reading read items from a plain-text URL file list. * Fix typos in the code and documentation. * Improve clarity of some code comments. * Add setsid example to the README.