Fixes MACDTrendAlgorithm to match C# and pass regression tests.
In the C#, the MACD fast period was previously updated from 9 to 12. It lead to an update in regression tests.
Adds overloads to Plot and PlotIndicator to handle calls from python.
Adds CustomChartingAlgorithm and changes MACDTrendAlgorithm to showcase the feature
Some python algorithms suffered corrections to run under the new python framework (pythonnet).
Others were deleted because some features will be supported in futures implementations.
Adds a method in AlgorithmPythonUtil to transform C# DateTime into Python datetime