redistmetrics 1.0.2

Makes ncores argument work for prep_polsby().
Speed improvements for compactness functions in serial.
C++ header-only interface for some functions
Reverses part_tau_gap() sign so positive is pro-Republican bias.
Improves usability of by_plan() by allowing for measurements to be repeated. Instead of reducing the vector length only if every entry is repeated the same number of times, it does it by the greatest common divisor.
Corrects documentation indicating that some inputs need to have sf geometry when it is not used.
Relicense under MIT License

redistmetrics 1.0.1

Reverses part_bias() sign so positive is pro-Republican bias.
Reverses part_egap() and part_egap_ep() sign so positive is pro-Republican bias.
Fixes bug where splits_admin() plans input needed to be sequentially numbered (#10).
Allows planarizing warnings to be silenced when epsg = FALSE (#11).
Makes ncores argument work for compactness functions.