sv instancer crazies.
Performance increase with algo switch for last part.
Some tuning
Update contribute.rst
promoting nodes
Float, int label
Merge branch 'master' of https://github.com/nortikin/sverchok
Merge pull request #320 from nortikin/sv-instance-node

sv instancer crazies.
this should prevent softmax exceeding / deceeding
supress

https://github.com/nortikin/sverchok/commit/f0e3d6e6896bdf46e10d27a60c0629355e7ba409
simple as child
Merge branch 'master'