Document changes and release 1:78.11.0-2

debian/changelog

+thunderbird (1:78.11.0-2) unstable; urgency=medium
+
+  [ Carsten Schoenert ]
+  * [241e539] d/thunderbird.1: Correct debugger option
+    Remove parts that are no longer valid, especially there is no dedicated
+    shell script any more the user has to start, calling 'thunderbird -g' is
+    enough to start a GDB call.
+  * [66deb37] thunderbird: Use internal NSS source while package built
+    (Closes: #989839, #989843, #989979, #989983, #989922, #990012)
+  * [07fb6ef] d/thunderbird-wrapper.sh: Use '${}' syntax for variables
+
+  [ Kevin Locke ]
+  * [d003e26] d/thunderbird-wrapper.sh: Make gdb call more fail safe
+    (Closes: #942799)
+
+ -- Carsten Schoenert <c.schoenert@t-online.de>  Sun, 20 Jun 2021 07:20:41 +0200
+
 thunderbird (1:78.11.0-1) unstable; urgency=medium
 
   * [42c4a87] New upstream version 78.11.0