Update changelog for 0.9.3-1 release

debian/changelog

 python-flasgger (0.9.3-1) unstable; urgency=low
 
+  [ Marcous Fouces ]
   * Initial Debian release. (Closes: #944430).
 
- -- Marcos Fouces <marcos.fouces@gmail.com>  Thu, 07 Nov 2019 23:54:34 +0100
+  [ Raphaël Hertzog ]
+  * Drop flasgger/ui2 directory
+  * Remove missing sources and dependencies related to flasgger/ui2
+  * Add the missing sources for swagger-ui
+  * Document the license of swagger-ui separately
+  * Document jquery license separately
+
+ -- Marcos Fouces <marcos.fouces@gmail.com>  Wed, 27 Nov 2019 16:12:40 +0100