fix dd_is_precision_ieee
begin transforming GPU stage 1 to use structures of arrays and decouple p/q values from their roots (WIP)
minor cleanup
switch size optimization to arbitrary precision throughout; separate ODE solver state; accurately track sign change of Jacobian determinant during homotopy path tracking
add 1 to degree of rotations; generalize objective function to optimize subsets of parameters; add support for degree 4 and 5
remove rectangular sizeopt norm; it was only to compare with poly51opt
adjust parameterization; add Gerbicz collision search; modify final stages of collision search to add radix sorting
add test program for fast collision search