Re-enable test for the RQFT
Keep track of multiplications in the new functions
Store x^((n+1)/2) to compute x^s more quickly

Only n≡1 mod 4 for now.
Run Julia if 'pic/false_positives.tex' is missing
Skip numbers where step (1) proves primality
Minor simplification
Make plots wider to better use the available space
Enlarge the confidence interval to 5σ
Use gnuplot line-styles that are easier to see
Export confidence intervals for plotting
Run faster test first
Nicer labels for x-axis
Gnuplot code cleanup
Plot all primes in one diagramme, with and without error bars
Remove old python implementation