Change locking of Ctrl modifier?

[vandys]

I'm really used to the Ctrl modifier only applying to the single keystroke which follows it.  Instead, Ctrl behaves like a caps lock, staying applied until you click it again.  I'm sure that's great for some, but not me.

I've had a swing through the Squeekboard documentation, and but I really don't see anything in the config file to control this.  Has anybody addressed it?  TIA.