* WIP

* CHANGE_DYNAMIC_STATE

* Implement full type prop for DynBroadcast when inputs const/static; clean up pass properties

* Add a unit test for the late-constness thing

* Update reference, interp, constant folding to handle autobroadcast

* Document the autobroadcast helper, and fix a corner case (zero's a number too!)

* Tests, and insert a check within the CPU folders for autobroadcast (it's still unsupported)

* Remove unnecessary include

* EXPECT_EQ -> ASSERT_EQ, for consistency

* Replace assert for CPU folders with a fallback