Dear Maintainer,
Devilspie2 has a new upstream, and they have made new releases (yay!)
which unfortunately doesn't follow the file-name "layout" of the
previous, which causes the watch file to not recognise the newer
versions.
A fix like
--- a/debian/watch
+++ b/debian/watch
@@ -1,3 +1,3 @@
version=3
opts=pgpsigurlmangle=s/$/.asc/ \
-https://download-mirror.savannah.gnu.org/releases/devilspie2/devilspie2_(.+)-src\.tar\.gz
+https://download-mirror.savannah.gnu.org/releases/devilspie2/devilspie2[_-](.+)[-src]*\.tar\.[gx]z
fixes the watch file and makes uscan also recognise the newer versions.