adding v tag building to conda recipies

Merge pull request #130 from paskino/libtomophantom-binary-package

setup conda and use specific python version from matrix in CI

attempt 1 to fix conda build

Merge pull request #128 from paskino/remove-np-py-pin

set minimum python version 3.9

update build scripts

removed pin

Update doc_conda.yml

Merge pull request #126 from dkazanc/radway_46_generate_nxs

adding some info in the script

attempting to fix docs

bumping up versions in the docs CI job

all demos updated to conform API changes in a new ToMoBAR package

Save phantom in uint16