rtd_environment.yml added for readthedocs

docs/rtd_environment.yml

+name: rst
+channels:
+  - conda-forge
+dependencies:
+  - cython
+  - python=3.7
+  - cythongsl
+  - gsl
+  - h5py
+  - numpy
+  - scipy
+  - sphinx
+  - sphinx_rtd_theme
+  - mock
+  - pillow
\ No newline at end of file

environment.yml

@@ -3,6 +3,7 @@ channels:
   - conda-forge
 dependencies:
   - cython
+  - python=3.7
   - cythongsl
   - gsl
   - h5py

readthedocs.yml

@@ -10,4 +10,4 @@ sphinx:
   configuration: docs/conf.py
 
 conda:
-  environment: environment.yml
\ No newline at end of file
+  environment: docs/rtd_environment.yml
\ No newline at end of file