Sped up operators
Fixed derivative multiplication
Sped up multivariate values()
schurfact macro, plot uses real
Fixed update plotting
speed up transform!
Disk transform only calculates relevant coefficients
Fixed bug of smaller than zero
Added sin
Added lap() for Disk
added lneumann()
more convenience routines
Added Chebyshev disk space
Fixed points
general neumann
support for bcs for dirichlet
PDEop^2
fixing Jacobi Neumann
Add PDEOperator*ProductFun
lap^2
Different radius disk