Reset TTY after embedded ssh/sftp on Unix (SGR + DECSTR).

Wrap ssh and sftp in sh on Unix so we print a soft reset sequence to
/dev/tty after the child exits, fixing garbled UI when remote sessions
leave attributes or modes set. Windows behavior unchanged.

Release v0.2.4.

Release v0.2.3

Release v0.2.2

Release v0.2.1

Release v0.2.0

Release v0.1.3

Release v0.1.2

Release v0.1.1

hello world