add access to global random seed

recover the lost gradient function

add direct accessors to common noise types

new programs: random, backflow

new function "zoomout"

cli: fix some argument types

add some doc

gauss and riesz semigroups

fix zoomin scaling factor

doc new functions

(acutally add them)

create pure python wheel for pip

pylambda (POC)

version bump for pip

remove debugging cruft

minimal plambda in python

divergence operator (backward differences)

README: update deploy instructions

add ppsmooth decomposition

blur boundary conditions

ntiply

fix scaling of some blur kernels

add qauto with options

api __all__

first commit with sauto and laplacian