Log Message:
nano: update to 2.9.8

2018.06.02 - GNU nano 2.9.8 "Espresso" brings the ability to filter the
             buffer (or the marked region) through an external command
             (^R^X and prefix the command with the pipe symbol, "|"), is
             better at detecting and maintaining paragraphs, is able to
             justify //-style comments, fixes a crash when the binding
             of a key to a string lacks a closing quote, gives feedback
             about the number of lines written also when prepending or
             appending, and fixes a couple of bugs with the linter.