Documentation and whitespace cleanups.
Add modular polynomial gcd over algebraic extensions.
Add numeric Liouvilian functions.
Export modpreduction, add little speedup.
Change derivatives of fresnelC and fresnelS.
Add complex ellipticF and ellipticE.
Add missing jacobiZeta.
Fix derivatives of meijerG.
Fix compilation of nested if-s.
Add dilog and digamma.