test(isolate): update test for 0.2.0 of motorcycle/core
test(isolate): update test for 0.2.0 of motorcycle/core

This test was failing after updating to 0.2.0
The previous 'subject' implementation in *core* continued to push
all values through even with the .map().switch()es of view$ and in
vTreeParser.js. With the update **only** the most recent value comes
through.

motorcyclejs/motorcyclejs,motorcyclejs/motorcyclejs,motorcyclejs/motorcyclejs