Upgrade LEAN Python to 3.6 from 2.7

- Adds log to display the python version the algorithm is using.
- Fixes python algorithms that were failing because of small subtleties
like leading zeroes.
- Updates pythonnet with a version compiled with python 3.6 flags

- Changes in DockerfileFoundation: we now use miniconda to manage the python
environment.
- Took the opportunity to add NTLK (#1349), Tensorforce (#1369) and
PyTorch/Pyro (#1385).
- Changes readme in Algorithm.Python to show steps to install miniconda

Algorithm.Python/BasicTemplateFrameworkAlgorithm.py

@@ -43,7 +43,7 @@ class BasicTemplateFrameworkAlgorithm(QCAlgorithmFramework):
         # Set requested data resolution
         self.UniverseSettings.Resolution = Resolution.Minute
 
-        self.SetStartDate(2013,10,07)  #Set Start Date
+        self.SetStartDate(2013,10,7)   #Set Start Date
         self.SetEndDate(2013,10,11)    #Set End Date
         self.SetCash(100000)           #Set Strategy Cash