• Readme & help about proxy setting
• Deal with the [options] in sources.list by stripping it from sources.list, and then get it back when generating new sources.list , fix jblakeman/apt-select#54
• Add a warning: custom mirror file's path and filename must NOT contain whitespace
• Add -R, --create-chroot=local_dir_absolute_path to create chroot with the best mirror in a local directory with absolute_path
• More test cases