Fast manipulation of symbolic multivariate polynomials
using the 'Map' class of the Standard Template Library. The package
uses print and coercion methods from the 'mpoly' package but
offers speed improvements. It is comparable in speed to the 'spray'
package for sparse arrays, but retains the symbolic benefits of
'mpoly'. To cite the package in publications, use Hankin 2022
<doi:10.48550/ARXIV.2210.15991>. Uses 'disordR' discipline.
[aut, cre]