Debian changelog update for v3.9.1

debian/changelog

@@ -1,3 +1,11 @@
+sdrangel (3.9.1-1) unstable; urgency=medium
+
+  * Transmission: make source channels working concurrently in multiple channel
+  * Transmission: connect source channel directly to device FIFO in single channel
+  * NFM and WFM modulators: fixes
+
+ -- Edouard Griffiths, F4EXB <f4exb06@gmail.com>  Sat, 30 Dec 2017 17:14:18 +0100
+
 sdrangel (3.9.0-1) unstable; urgency=medium
 
   * Server: proof of concept