Merge pull request #65 from leifj/master

cut 0.19

Author: leifj

NEWS.txt

@@ -158,3 +158,16 @@ News
 *Release fre 25 maj 2018 19:43:54 CEST*
 
 * fix verification bug affecting sha512
+
+0.19
+----
+
+*Release tis 22 jan 2019 13:53:49 CET*
+
+* python3 compatibility
+* fix private key leak issue
+* P11 fixes
+* test improvements
+
+0.20
+----

setup.py

@@ -9,7 +9,7 @@
 NEWS = open(os.path.join(here, 'NEWS.txt')).read()
 
 
-version = '0.19dev1'
+version = '0.20dev1'
 
 install_requires = [
     'defusedxml', 'lxml', 'pyconfig', 'requests', 'cryptography', 'six'