debian/watch: use github tags

debian/watch

-version=3
-# It is not recommended use fakeupstream. Please investigate more.
-# Origin url: https://github.com/medikoo/es6-set
-# Take a look at https://wiki.debian.org/debian/watch/
-# See also fakeupstream: http://anonscm.debian.org/viewvc/qa/trunk/cgi-bin/fakeupstream.cgi?view=markup
+version=4
 opts=\
-dversionmangle=s/\+(debian|dfsg|ds|deb)(\.\d+)?$//,\
-filenamemangle=s/.*=// \
- http://qa.debian.org/cgi-bin/fakeupstream.cgi?upstream=npmjs/es6-set .*=es6-set-(\d.*)\.(?:tgz|tar\.(?:gz|bz2|xz))
+ctype=nodejs,\
+dversionmangle=auto,\
+filenamemangle=s/.*\/v?([\d\.-]+)\.tar\.gz/node-es6-set-$1.tar.gz/ \
+ https://github.com/medikoo/es6-set/tags .*/archive/v?([\d\.]+).tar.gz