- update to 0.4.0:
+ Change the daemon mod flag for all tunnel threads (is not fully backward
compatible) to prevent unexpected hangs (`#219`_) + Add docker based end to end
functinal tests for Mongo/Postgres/MySQL
+ Add docker based end to end hangs tests
+ Fix host key directory detection
+ Unify default ssh config folder to `~/.ssh`
+ Increase open connection timeout to 10 secods
+ Change default with context behavior to use `.stop(force=True)` on exit
+ Remove useless `daemon_forward_servers = True` hack for hangs prevention
+ Set transport keepalive to 5 second by default
+ Set default transport timeout to 0.1
+ Deprecate and remove `block_on_close` option
+ Fix "deadlocks" / "tunneling hangs"
+ Add `.stop(force=True)` for force close active connections
+ Fixes bug with orphan thread for a tunnel that is DOWN
+ Support IPv6 without proxy command. Use built-in paramiko create socket
logic. The logic tries to use ipv6 socket family first, then ipv4 socket
family.