@hackage dataframe-core1.0.1.0

Core data structures for the dataframe library.

Minimal interchange-format types for the dataframe ecosystem: Column, DataFrame, Bitmap, the untyped expression/interpreter, and the typed-schema phantom layer. Contains no Template Haskell and no file I/O. Lightweight dependency footprint (base, vector, containers, time, random, bytestring, text) so other packages can exchange dataframes by-value without pulling in the full dataframe package.