Breaking changes

d97cfcc: #158 - removed unsafe key exchanges from default algorithm list when the openssl feature is disabled
ae95df8: #171 - removed unsafe none HMAC from the default algorithm list
6606e28: #141 - renamed Config::connection_timeout to Config::inactivity_timeout to better reflect its purpose
eb6fee2: support RFC8731 name of curve25519-sha256 kex (Jan Christian Grünhage) #158
CURVE25519 is now curve25519-sha256 instead of curve25519-sha256@libssh.org
curve25519-sha256@libssh.org is still available as CURVE25519_PRE_RFC_8731
531fe30: Error::UnsupportedKeyType now holds a String (Lucas Kent) #161

Changes

359fa3c: fixed #100 - allow overriding Handler methods without losing Channel functionality
87245b5: Support ssh clients without RFC 8308 extension negotation mechanism (Mateusz Kondej) #153
576c691: Trait method to add conditions for SSH agent server when accepting requests for operations (Saksham Mittal) #166
84264b3: Use negotiated kex instead of prefered (Raphael Druon) #174
973dee5: only send enabled key algos in server-sig-algs
5d82dcb: Update dependencies (Lucas Kent) #169
8c8b064: removed EXTENSION_SUPPORT_AS_x from explicit kex list
43edc32: fixed #172 - update ed25519-dalek #173