Merge version 1.68-4+rpi1 and 1.78-1 to produce 1.78-1+rpi1

diff --cc debian/changelog
index e32a408a6114fc5c177134c8c385242f4e42bdae,21e825304ea006d81c95fbb55aaaeaa70e9f4af8..c6ccb30954d47341f404fc7c3e6ca826036e560a
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,10 -1,9 +1,17 @@@
- pigpio (1.68-4+rpi1) bullseye-staging; urgency=medium
++pigpio (1.78-1+rpi1) bullseye-staging; urgency=medium
 +
 +  [changes brought forward from 1.68-3+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Thu, 24 Jan 2019 13:31:37 +0000]
 +  * Add back systemd stuff and ensure systemd unit is only installed in pigpiod package.
 +  * Add server related packages and metapackage.
 +
-  -- Peter Michael Green <plugwash@raspbian.org>  Sat, 07 Sep 2019 03:14:40 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Fri, 05 Feb 2021 14:24:57 +0000
++
+ pigpio (1.78-1) unstable; urgency=medium
+ 
+   * New upstream release.
+     + adds pi4 support (though server is currently disabled in Debian package)
+ 
+  -- Peter Michael Green <plugwash@debian.org>  Thu, 28 Jan 2021 19:08:40 +0000
  
  pigpio (1.68-4) unstable; urgency=medium