pytermwm v1.0.3

Added

• dialog poll <id> returns a dialog's {closed, result} directly, including for a little while after it has
  closed; pytermwm dialog-wait <id> [--timeout SECONDS] polls it from the CLI and blocks until answered.

Fixed

• Several macOS-specific issues, most from tracking down CI hanging there for hours on end:
  • Starting the web server no longer calls socket.getfqdn() on every start (HTTPServer.server_bind() does
    this by default); it can hang for a long time on a machine with no reachable DNS/mDNS resolver.
  • The open-file soft limit is now capped on startup (POSIX only). A very high limit (seen on macOS) made every
    window's subprocess.Popen(close_fds=True) slow, since closing every fd up to that limit is the only option
    on a platform with no /proc to list which fds are actually open.
  • RawTerminal.__exit__ no longer waits for its output to be read before restoring terminal attributes
    (TCSADRAIN -> TCSANOW). A real terminal always drains immediately, but a pty with no active reader can
    make TCSADRAIN wait forever depending on the platform.
  • The btop window's process list now falls back to ps on platforms with no /proc (macOS and other BSDs),
    instead of always coming back empty there.