Release 0.20.17.

NEWS

@@ -1,4 +1,4 @@
-0.20.17	UNRELEASED
+0.20.17	2021-02-04
 
  * credentials: ignore end-of-line character. (Georges Racinet)
 

setup.py

@@ -23,8 +23,7 @@ if sys.version_info < (3, 5):
         'For 2.7 support, please install a version prior to 0.20')
 
 
-dulwich_version_string = '0.20.15'
-
+dulwich_version_string = '0.20.17'
 
 class DulwichDistribution(Distribution):