+++++++
Changes
--------
* Updated embedded libssh2 version to ``1.9.0``.
* Rebuilt sources with Cython ``0.29.21``.
* Added support for Python 3.8 and 3.9.
Fixes
------
* ``Session.userauth_publickey_frommemory`` would not work without an empty passphrase provided - 86
Packaging
----------
* Added Python 3.8 binary wheels for Linux, OSX and Windows.
* Added Python 3.9 binary wheels for Linux.
* Added OSX 10.14 and 10.15 wheels.
* Removed OSX < 10.14 wheels.
* Removed Python 2.7 OSX and Windows wheels.
* Removed Python 3.5 OSX and Windows wheels.
* Removed Windows 32-bit wheels.