mdl 0.17.0

Added

• Added treat_links_as_single_word option to MD013 #580

Fixed

• MD013 - Do not trigger on a single long word in backticks #580
• MD013 - Do not trigger on a single long word alone on a line continuation #580
• MD013 - Do not trigger on a list item with a single long word #580
• Docker - Use latest alphine so mdl version is correct