Update website.

Author: ikanobori

pages/downloads.rst

@@ -28,7 +28,7 @@ please take a look at ``cffi``'s `documentation`_.
 
 Release tarball
 ===============
-The latest release for bpython is **0.16** and you can download it on our
+The latest release for bpython is **0.17.1** and you can download it on our
 `release page`_. You can find older releases here.
 
 Git repository