added TOXENV variable.
added TOXENV variable.

steenzout/flx,steenzout/python-kerfi-vangasvipur,steenzout/python-sphinx,collectdbit/verzamelend,steenzout/python-primogen,steenzout/python-kerfi-vangasvipur,collectdbit/verzamelend,steenzout/verzamelend,steenzout/verzamelend,steenzout/flx