debian/NEWS.Debian

+dnscrypt-proxy (2.0.16-2) unstable; urgency=medium
+
+  * The 2.0 series of dnscrypt-proxy has been rewritten in Go, has support
+    for DNS-over-TLS and DNS-over-HTTPS, and has a completely different
+    configuration file format, now found in
+    /etc/dnscrypt-proxy/dnscrypt-proxy.toml. No attempt to convent the old
+    config file to the new one has been made.
+
+ -- Eric Dorland <eric@debian.org>  Thu, 02 Aug 2018 23:07:34 -0400
+
 dnscrypt-proxy (1.8.1-3) unstable; urgency=medium
 
   * As of this version the /etc/default/dnscrypt-proxy is no longer used

debian/changelog

+dnscrypt-proxy (2.0.16-2) unstable; urgency=medium
+
+  * Target back to unstable (Closes: 894280)
+  * Add NEWS message about the 2.0 series
+  * Remove old dnscrypt-proxy.conf file
+
+ -- Eric Dorland <eric@debian.org>  Thu, 02 Aug 2018 23:24:08 -0400
+
 dnscrypt-proxy (2.0.16-1) experimental; urgency=medium
 
   * New upstream release.

debian/dnscrypt-proxy.maintscript

 rm_conffile /etc/init.d/dnscrypt-proxy 1.8.1-3~ dnscrypt-proxy
 rm_conffile /etc/default/dnscrypt-proxy 1.8.1-3~ dnscrypt-proxy
 mv_conffile /etc/dnscrypt-proxy/dnscrypt-proxy.conf/dnscrypt-proxy.conf /etc/dnscrypt-proxy/dnscrypt-proxy.conf 1.8.1-4~  dnscrypt-proxy
+rm_conffile /etc/dnscrypt-proxy/dnscrypt-proxy.conf 2.0.16-2~ dnscrypt-proxy