... to allow them to be called several times without having to
wait for the delays.
This was already done for _.throttle, by default for the whole
test suite, and it couldn't be parameterized in individual tests.
This was enough for _.throttle, but the same solution couldn't be
applied for _.debounce, because some tests actually test that some
handlers are correctly debounced.
Those function are now patched in addMockEnvironment, and two
parameters can be set: 'debounce' (default: true) and 'throttle'
(default: false).
Aaron Bohy
595a405b76