Improvements from internal call

[Saul Shanabrook]

• See if we can get signatures for c functions which we fail to get now
• Record the position of named args as well
• Seperate function name, if it is a method or classmethod
• seperate functions passed in (see if there are any)
• groupby lines first, and record that to minimize length
• ignore from test file
• add docker images
• add some top used numpy repos

[Saul Shanabrook]

Seems like some C functions in NumPy don't have signature defined, so we need to live with this: numpy/numpy#16384