Add metafield, e.g.: `_x_`. A metafield implies that `hosh(value) = ø`, and during `hdict.hosh` calculation: `hosh(key) = ø`. They are invisible for identification purposes.
2.230721.7
Add method `apply`
2.230721.6
Add support for hoshing _PredictScorer and _ProbaScore
2.230721.5
Fix unhandled hdict/frozenhdict inside expressions Implement cast to `bool`
2.230721.4
Add option to transpose imported CSV/ARFF
2.230721.3
Add Self: `_` for usage as parameter, argument, or value pointing to the hdict itself Change semantics of _ for consistency: _(1,2,3) = sample(1,2,3) _["a"] = hdict["a"]