Arbitrary stream output for the printSquelchState function
Remove debug printout in Async::Pty
Implement output stream buffer for PTYs
First working version of the voter squelch state PTY
Improve squelch state PTY output
Add documentation for SQL_STATE_PTY
Add check for squelch state PTY being open before write
Update ChangeLog, versions and default config
Final touches for the squelch state PTY feature