h2oai / h2oai/datatable

Add missing statistical reducers

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#2,999 4 comments 2 reactions 1 assignee Claimed by @pradkrish View on GitHub
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Description

RIght now the following reducers are only available as the corresponding `Frame` methods, but can't be used in the square brackets syntax as `dt.*()`:

- [ ] `kurt()`
- [ ] `skew()`
- [ ] `mode()`
- [ ] `nmodal()`
- [x] `nunique()` #3038
- [x] `countna()` #3024

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