This avoids (without fixing) #184).
Note that the offset in tidal is currently 0.0001, but using this
would result in excess correlation between sequential uses of
random, which would manifest in failure of the 'supports the randome
choice operator with nesting' test. So I just used 0.0002 instead
This would no longer match with Tidal (which uses
0.0001), but reduces the correlation among the
the different random streams in the mini-notation's
parsing of ? and |
