referencing of column names needs to be standardized

[XilinJia]

In both cci and keltnerbands, columns are referenced by the names such as "High", "Close" etc. This is based on the assumption that the data come with these names. How do we ensure about this assumption? Somewhere this needs to be addressed.

[milktrader]

You should also observe the µprice method that calculates the typical price. This is a very common calculation in technical analysis but I think the name I gave it is unfortunately too obtuse.

We could possibly apply a regex to capture High, Hi, high, hi in a newly named µprice method. Another solution is to pass kwargs where these strings are explicitly defined.

What do you think?

[milktrader]

Standardizing on typical method.#40