Include client numbers even if we think we got reports from more than 100% of all relays

The estimated fraction of reported user statistics from relays has reached 100% and even went slightly beyond that number to 100.294% on 2018-10-27 and 100.046% on 2018-10-28.

The effect is that we're excluding days when this happened from statistics, because we never thought this was possible:

WHERE a.frac BETWEEN 0.1 AND 1.0

However, I think this is most likely a rounding error somewhere, not a general issue with the approach. Stated differently, it seems wrong to include a number with a fraction of reported statistics of 99.9% but not one where that fraction is 100.1%.

I suggest that we drop the upper limit and change the line above to:

WHERE a.frac >= 0.1

We'll be replacing these statistics by PrivCount in the medium term anyway.

However, simply excluding data points doesn't seem like an intuitive solution.

Thoughts?