Release 0.9.17.

Author: jwilk

doc/changelog

@@ -1,4 +1,4 @@
-pdf2djvu (0.9.17) UNRELEASED; urgency=low
+pdf2djvu (0.9.17) unstable; urgency=low
 
   * Fix build failure with Poppler ≥ 0.86.
     Thanks to David B. Evans for the bug report.
@@ -9,7 +9,7 @@ pdf2djvu (0.9.17) UNRELEASED; urgency=low
     - Expat to 2.2.9;
     - FreeType to 2.10.1.
 
- -- Jakub Wilk <[email protected]>  Mon, 02 Mar 2020 17:10:13 +0100
+ -- Jakub Wilk <[email protected]>  Mon, 02 Mar 2020 17:46:38 +0100
 
 pdf2djvu (0.9.16) unstable; urgency=low