Implemented the option (`-k`, `--keep-going`) to continue ripping the CD even if one track fails to rip (as @xmixahlx suggested in #128). Requested in #128 Signed-off-by: blueblots <63152708+blueblots@users.noreply.github.com> Changed line-lengths/indentation of some code Travis-CI was failing on account of lines being under-indented or too long, this should correct it. Signed-off-by: blueblots <63152708+blueblots@users.noreply.github.com>