Typing RangeIndex

[MarcoGorelli]

Here's the methods which are some untyped arguments / return type:

• max
• min
• from_range
• __reduce__ (undocumented, can probably be removed?)
• get_indexer
• tolist
• argsort
• factorize
• equals
• join
• __floordiv__

Some of these might be removable in favour of the parent implementation