'fromPoll' and 'alwaysP' are available again.

The 'Asteroids' and 'NetMonitor' examples now work again.
A new function 'imposeChanges' now allows us to change the sampling frequency of 'Behavior's.

This allows us to implement text input boxes correctly in the 'CRUD' example. Programmatic changes to the text input are now discard while the user is typing.