Mutate can rename columns

[srini047]

Fixes: #298
Docs: mutate() can rename columns with example

[shcheklein]

do we need a new string here? seems that it's small enough to fit the same line?

[srini047]

Can I get more clarity on the same.

[shcheklein]

it's minor, not a blocker:

just to clarify - what I meant is to have

dc.mutate(newkey=Column("oldkey"))

(w/o extra newlines).

Again, not a blocker at all, just a suggestion to consider.

[shcheklein]

thanks for the PR @srini047 ! I left some comments in the ticket and in the PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.93%. Comparing base (35bef8a) to head (9078307).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #312   +/-   ##
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  Coverage   86.93%   86.93%           
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  Files          90       90           
  Lines        9899     9899           
  Branches     1996     1996           
=======================================
  Hits         8606     8606           
  Misses        944      944           
  Partials      349      349           

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[shcheklein]

thanks @srini047 !