added an option (opt.w) to compute weights for the rebalancing of the svm.
made it possible to use weights during parameters selection
made it possible to use weights during parameters selection
Merge branch 'master' of github.com:scattlab/scattlab
move files to scatutils and filters
Merge branch 'master' of github.com:scatnet/scatnet
bugfix remove margin
redo doc scat
redoc doc scat
small doc