update some very out of date language (#1222)

Author: reaperhulk

doc/introduction.rst

@@ -14,23 +14,19 @@ Other OpenSSL wrappers for Python at the time were also limited, though in diffe
 Later it was maintained by `Jean-Paul Calderone`_ who among other things managed to make pyOpenSSL a pure Python project which the current maintainers are *very* grateful for.
 
 Over the time the standard library's ``ssl`` module improved, never reaching the completeness of pyOpenSSL's API coverage.
-Despite `PEP 466`_ many useful features remain Python 3-only and pyOpenSSL remains the only alternative for full-featured TLS code across all noteworthy Python versions from 2.7 through 3.6 and PyPy_.
+pyOpenSSL remains the only choice for full-featured TLS code in Python versions 3.7+ and PyPy_.
 
 
 Development
 ===========
 
 pyOpenSSL is collaboratively developed by the Python Cryptography Authority (PyCA_) that also maintains the low-level bindings called cryptography_.
 
-Current maintainer and release manager is `Hynek Schlawack`_.
-
 
 .. include:: ../CONTRIBUTING.rst
 
 
 .. _Jean-Paul Calderone: https://github.com/exarkun
 .. _PyPy: http://pypy.org
-.. _PEP 466: https://www.python.org/dev/peps/pep-0466/
 .. _PyCA: https://github.com/pyca
 .. _cryptography: https://github.com/pyca/cryptography
-.. _Hynek Schlawack: https://hynek.me/