do the roundoff error analysis justifying 0.9999999 and 1.0000001
document the cutoff strategies
prove that CRT recovery works for the parameters allowed

speed up reciprocal
deal with 0 more efficiently in fft
speed up scaling in exp
speed up term-by-term product in exp
don't bother computing top half of g in exp; 14 -> 12
use higher-order iteration; 12 -> 8.5+epsilon

build general-purpose exp-bounding library
incorporate large-prime program
incorporate heuristic polynomial program
handle series over group rings for, e.g., ray class groups
handle series over semigroup rings

include 2D graphing tools
include 3D graphing tools
