Constructor now takes activeSetSize argument.

Further simplify(!) initialise() to support active set.
Re-forge connection, if needed, before rewriting XML.
No need to use ...::Record since Connection now does so.
Remove _render_record() into Utils.
Clarify logging.
Add (but do not use) tolerant_ZOOM_event().  Perhaps the ZOOM::event()
	wrapper in ZOOM-Perl should do this.