[FIX] Removed unnecessary applyMultiply from opCurvelet
[FIX] Removed unnecessary applyMultiply in opCurvelet3d
[FIX] Changed opDirac and opNull multiply methods into in-place
[ADD] Added multivector support for opMask
[FIX] Fixed opMask diag ineffeciency
[FIX] changed spdiags to dot times because of singles incompatibility