Several new features are available for testing

[DRC]

Thanks to some funded development that landed after 3.2 beta1 was
released, there are now some new features in the dev/3.3 Evolving branch
and pre-release builds (https://turbovnc.org/DeveloperInfo/PreReleases)
that might interest some of you:

- Viewer: The ability to use desktop scaling with automatic desktop
resizing, which is useful with HiDPI monitors
* Basically, this allows you to automatically resize the remote
desktop so that it matches the client's physical screen resolution, even
if the client's effective screen resolution is scaled. For instance, if
you are using a 2560x1600 Retina display scaled to 1280x800, then you
can set the scaling factor in the TurboVNC Viewer to 50%, and automatic
desktop resizing will behave as if the client's screen resolution was
not scaled.

- Viewer: Toolbar icons for zooming in (increasing the scaling factor),
zooming out (decreasing the scaling factor), or resetting the scaling
factor to 100%

- Viewer: The built-in SSH client can now tunnel connections to VNC
servers that are listening on Unix domain sockets.

- Session Manager: Support for TurboVNC sessions that are listening on
Unix domain sockets

- A new security configuration file directive for limiting the number of
TurboVNC sessions that can run under a user's account (honored by both
the vncserver script and the Session Manager)

Feedback on the implementation of these features is welcome.

DRC