tablecloth.api/percentiles is not supposed to add a column

[daslu]

The following was reported by @lvh on a Slack thread:
https://clojurians.slack.com/archives/C0BQDEJ8M/p1727016052908239

tablecloth.api/percentiles is currently expected to add a column to a dataset, but this does not make sense.
https://github.com/scicloj/tablecloth/blob/1d501aa/src/tablecloth/api.clj#L1790

The percentiles computation indeed returns a collection of numbers, but the elements of that collection are simply the percentiles -- they do not correspond to the actual rows of the dataset, and thus they do not make sense as a new column.

[genmeblog]

It was (accidentally) added by a column project. Here is the full list, maybe it's good to review it again to avoid similar pitfalls.

tablecloth/src/tablecloth/api/api_template.clj

Line 136 in 1d501aa

* + - / < <= > >= abs acos and asin atan atan2 bit-and bit-and-not bit-clear bit-flip bit-not bit-or bit-set bit-shift-left bit-shift-right bit-xor cbrt ceil cos cosh cummax cummin cumprod cumsum distance distance-squared dot-product eq even? exp expm1 finite? floor get-significand hypot identity ieee-remainder infinite? kurtosis log log10 log1p logistic magnitude magnitude-squared mathematical-integer? max mean mean-fast median min nan? neg? next-down next-up normalize not not-eq odd? or percentiles pos? pow quartile-1 quartile-3 quot reduce-* reduce-+ reduce-max reduce-min rem rint round shift signum sin sinh skew sq sqrt sum sum-fast tan tanh to-degrees to-radians ulp unsigned-bit-shift-right variance zero?)

[lvh]