rust-alga 0.9.3 Abstract algebra for Rust

Alga aims to provide solid mathematical abstractions to algebra-focused applications. It defines and organizes through trait inheritance the basic building blocks of general algebraic structures. Specific implementations of algebraic structure traits are left to other crates. Higher-level traits for specialized domains of algebra (like linear algebra) are also provided and will prove useful for applications that include code that is generic with regard to the algebraic entity types.