environment for Linux+Mac for the March 2021 workshop

environment.yml

-# Open a terminal and execute thf following command to create the conda environment
+# Open a terminal and execute the following command to create the conda environment
 # for the workshop
 # 'conda env create -f environment.yml'
 
-name: machine_learning_workshop
+name: machine_learning_workshop_2021
 
 channels:
     - https://repo.anaconda.com/pkgs/main
     - conda-forge
 
 dependencies:
-    - python==3.6.8
-    - pandas==0.25.0
-    - matplotlib==3.1.1
-    - scikit-learn==0.21.2
-    - seaborn==0.9.0
-    - jupyter==1.0.0
-    - jupyter_contrib_nbextensions==0.5.1
-    - keras==2.2.4
-    - tensorflow==1.10
-    - pydot==1.4.1
-    - pillow==6.1.0
+    - python==3.8
+    - pandas
+    - matplotlib
+    - scikit-learn==0.24.1
+    - seaborn
+    - jupyterlab
+    - pydot
+    - pillow
+    - pip
+    - pip:
+            - tensorflow==2.4.1