Removed obsolete runtime graph capability.
First cut: minimal ISO8601 test suite working.
Deleted old cycling modules.
Integer cycling and demo in dev/suites.
Runahead limit as a factor of the cycling interval.
Integer cycling with multiple sections working.
Better cycling module method names (integer working).
Async oneoff tasks can use the integer cycler.
Restored validation task check.
Simple ISO8601 suite working again.
And with intra-cycle triggers.