Log environment

Hard to do regression testing when you don't know what was installed.
Why is Azure so useless?

.azure/pipelines.yml

@@ -233,6 +233,10 @@ stages:
           sudo apt-get --yes install texlive-extra-utils
         displayName: Install LaTeX
 
+      - bash: |
+          conda env export --name myEnvironment
+        displayName: Environment
+
       - bash: |
           source activate myEnvironment
           export ETS_TOOLKIT=null
@@ -291,6 +295,10 @@ stages:
         displayName: Build wheel
         condition: startsWith(variables.image, 'ubuntu')
 
+      - bash: |
+          conda env export --name myEnvironment
+        displayName: Environment
+
       - bash: |
           source activate myEnvironment
           python setup.py release --unix