http://tech.ml.dataset [dplyr](https://dplyr.tidyverse.org/)-like dataset manipulation library is now on Clojars. For those who are not familiar with this spin-off: this is small library build on the top of http://tech.ml.dataset as an addition (not replacement). This API brings thread-first unified functions with slightly different approach to grouping and aggregation. Also you get pivoting operations from tidyr
(R library).