added: use separate float for the ladspa plugin control, and reset it each time before passing audio through the plugin, since the ladspa plugin can change the control value
fixed: when comparing jack port flags, only check if the input or output flag is identical
fixed: calling unique() on the ports list is useless since the sort is case insensitive and the comparison is not
added: log message when a port deregistered and it can't be found in the internal list
fixed: port flags are unreliable when they are deregistered, so just check by name instead