Add same environments to Azure, except PyPy

PyPy needs a little more work I suspect

Author: nicoddemus

azure-pipelines.yml

@@ -15,6 +15,18 @@ jobs:
       py27:
         python.version: '2.7'
         tox.env: 'py27'
+      py27-xdist:
+        python.version: '2.7'
+        tox.env: 'py27-xdist'
+      py27-trial/numpy/nobyte:
+        python.version: '2.7'
+        tox.env: 'py27-trial,py27-numpy,py27-nobyte'
+      py27-pluggymaster:
+        python.version: '2.7'
+        tox.env: 'pluggymaster'
+      py34:
+        python.version: '3.4'
+        tox.env: 'py34'
       py35:
         python.version: '3.5'
         tox.env: 'py35'
@@ -24,7 +36,22 @@ jobs:
       py37:
         python.version: '3.7'
         tox.env: 'py37'
-    maxParallel: 4
+      py37-linting/docs/doctesting:
+        python.version: '3.7'
+        tox.env: 'linting,docs,doctesting'
+      py37-xdist:
+        python.version: '3.7'
+        tox.env: 'py37-xdist'
+      py37-trial/numpy:
+        python.version: '3.7'
+        tox.env: 'py37-trial,py37-numpy'
+      py37-pluggymaster:
+        python.version: '3.7'
+        tox.env: 'py37-pluggymaster'
+      py37-freeze:
+        python.version: '3.7'
+        tox.env: 'py37-freeze'
+    maxParallel: 10
 
   steps:
   - task: UsePythonVersion@0