Make relational operators work with all scalars

[Dr-Irv]

• Closes Unsupported operand types for > ("Series[Any]" and "Timedelta") #175
• Tests added:
  • test_series.py:test_relops()

Made it so any scalar is comparable to a Series.

[twoertwein]

Happy to merge!

There are places where the annotations for the operators is relatively strict in regard to the type of Series ,e.g., to prevent __ge__(self: Series[int], other: Series[str]). Could replace Scalar with S1 but I assume that might be too strict/create too many false negatives?

[Dr-Irv]

There are places where the annotations for the operators is relatively strict in regard to the type of Series ,e.g., to prevent __ge__(self: Series[int], other: Series[str]). Could replace Scalar with S1 but I assume that might be too strict/create too many false negatives?

I like the idea of using S1 here. If the Series has a known type, we are then saying you can only compare to that type. Most of the time, the Series is really Series[Any] so allowing any comparison to S1 will work fine.

This will then prevent doing Series[Timestamp] comparing to Timedelta, which is something we want to pick up.

Let's put it out there and see if we get any reports. Tests are passing with using S1.

[twoertwein]

Thanks @Dr-Irv !