Correct pretty formatting of estimate if error is rounded up.
Correct pretty formatting of estimate if error is rounded up.

Before we weren't handling cases such as an error of 9.8 correctly--we rounded the error
to 10 but still treated the value as if the error affected the 10^0 rather than 10^1 so
didn't round the value correctly.  The output was consistent, just a little odd!

hande-qmc/hande,hande-qmc/hande,ruthfranklin/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande