state: Rename `willUpdate`/`didUpdate` to `willChange`/`didChange`
state: Rename `willUpdate`/`didUpdate` to `willChange`/`didChange`

Signed-off-by: Jesse Stuart <a5c95b3d7cb4d0ae05a15c79c79ab458dc2c8f9e@jessestuart.ca>

jvatic/marbles-js,jvatic/marbles-js