Removes static dependencies on readthedocs envioronment file conflicting with readthedocs.org (#205)
Removes static dependencies on readthedocs envioronment file conflicting with readthedocs.org (#205)

* Removed setuptools from requirements

* Removed all fixed packages from doc environment

* Further simplified new environment.yml for RTD

INM-6/elephant,mdenker/elephant,NeuralEnsemble/elephant,NeuralEnsemble/elephant,apdavison/elephant,INM-6/elephant,NeuralEnsemble/elephant,alperyeg/elephant,mdenker/elephant,INM-6/elephant,JuliaSprenger/elephant,mdenker/elephant,alperyeg/elephant,apdavison/elephant