Joe Cheng 94ee42cebb Add priority levels to observers ...

Observers can now take priority levels, which allow the user to control
the order of execution. Note that reactive expressions do not have
priority levels; since they are lazily evaluated, it wouldn't make any
sense to speak of priorities.

Another commit will be needed to add an API for changing the priorities
of outputs (probably in outputOptions?).

2013-04-19 10:34:34 -07:00

3.7 KiB

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