numpy bump

ml-agents/setup.py

         "jupyter",
         "matplotlib",
         "mlagents_envs=={}".format(VERSION),
-        "numpy>=1.13.3,<2.0",
+        # "numpy>=1.13.3,<2.0",
+        "numpy>=1.16.0,<2.0",  # TEMP FOR TRAINING
         "Pillow>=4.2.1",
         "protobuf>=3.6",
         "pyyaml",

test_constraints_min_version.txt

 # pip constraints to use the *lowest* versions allowed in ml-agents/setup.py
 grpcio==1.11.0
-numpy==1.13.3
+numpy==1.16.0  # TEMP
 Pillow==4.2.1
 protobuf==3.6
 # TEMPORARY