key field in cell should not be cell value

i am struggling with the autogenerated key field for columns which seams to be a stringified version of the cell value. This causes conflicts when two different columns for an object display the same value (e.g. you wanna display 2 boolean columns).

Warning: Encountered two children with the same key, `false`. Keys should be unique so that components maintain their identity across updates. Non-unique keys may cause children to be duplicated and/or omitted — the behavior is unsupported and could change in a future version.

I have submitted a pull request for review: #173

Alternatively, is there a way to manually set the key value for columns?

[AllenFang]

@dandonahoe next patch will fix it. eta this week !!

[fuchsberger]

your work is pure awesomeness so of course Ill use it. as far as i can see in your code the key has no specific purpose on the cell rather than identifying it among its siblings. therefore i do not see any advantage in allowing a custom key to be set if it can be uniquly generated with the information given.

index-content sounds fine as long as its not content on its own.

key  = {`${index}-${content}`}