- update to 2.13.2:
* Fixed an issue with host-based authentication when using
proxy_command, allowing it to be used if the caller
explicitly specifies client_host.
* Improved handling of signature algorithms for OpenSSH
certificates so that RSA SHA-2 signatures will work with
both older and newer versions of OpenSSH.
* Worked around an issue with some Cisco SSH implementations
generating invalid "ignore" packets.
* Fixed unit tests to avoid errors when cryptography's version
of * OpenSSL disables support for SHA-1 signatures.
* Fixed unit tests to avoid errors when the filesystem enforces
that filenames be valid UTF-8 strings.
* Added documentation about which config options apply when
passing a string as a tunnel argument.