allow bytes-like for key/iv/data for symmetric encryption (#4621)
* allow bytearrays for key/iv for symmetric encryption
* bump pypy/cffi requirements
* update docs, fix some tests
* old openssl is naught but pain
* revert a typo
* use trusty for old pypy
* better error msg again
* restore match
diff --git a/docs/installation.rst b/docs/installation.rst
index 2d9db66..5b2854d 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -11,7 +11,7 @@
-------------------
Currently we test ``cryptography`` on Python 2.7, 3.4+, and
-PyPy 5.3+ on these operating systems.
+PyPy 5.4+ on these operating systems.
* x86-64 CentOS 7.x
* macOS 10.12 Sierra, 10.11 El Capitan