Non-real-time systems like Windows, Linux and macOS do not have reliable timing, so increase the sleep intervals to make these tests more likely to pass. Signed-off-by: Damien George <damien@micropython.org>
It should take 0 time to await on a negative sleep. Signed-off-by: Damien George <damien@micropython.org>
All .exp files are included because they require CPython 3.8 which may not always be available.