Option to disable automatic updating of watch window

[Roy-Orbison]

I have a PHP class that will crash Vim whenever I debug code that uses it. I get a slew of errors that point at Vdebug's python code but I don't know what the true cause is. It doesn't make a difference if I step over it or into it, Vim will choke. I recently discovered that by first executing :VdebugEval! $not_a_real_var, it stops crashing. xdebug.show_local_vars exists and is disabled by default for good reason, so it doesn't make sense that Vdebug voids it by always reading context. My workaround is hacky and I'd prefer an official method of preventing auto-update of the watch window. Hitting F11 or F12 should always cause an update, and the window itself would probably need a message added to indicate it's off. Something like this:

let g:vdebug_options.freeze_context = 1