leftover file

v1.2.5: fix bug found by Michael J.

New workshop, small "strict mode" fixes, small linear programming imp…

…rovement

solveLP: bypass uncmin and embed Newton iteration

Reverting to v1.2.0+a bugfix

solveLP was unstable in v1.2.1. This is due to the fact that the
Hessian of the barrier problem can be singular. Since v1.2.0 did not
use the Hessian, it was more robust. v1.2.2 is thus a revert to v1.2.0
plus a tiny bug fix.

Inlining Newton iteration into solveLP is 5x faster than calling uncmin

New feature: linear programming (numeric.solveLP)

bugfix in eig

IE can't solve to tolerance 1e-12 so I increased it to 1e-10

oops, deleted some obsolete code