Module zero

Sets and functions, and a little abstract algebra.

Re-exports

• pub use self::column::*;
• pub use self::set::*;

Modules

• alg
  Commutative algebra and polynomials.
• column
  Data structures for mappings and columns, as found in data tables.
• rig
  Rigs, rings, and modules over them.
• set
  Sets, finite and infinite.