Updates for publishing

Cargo.toml

@@ -2,6 +2,11 @@
 name = "differential_equations"
 version = "0.2.2"
 edition = "2021"
+authors = ["Connor Johnstone"]
+description = "A library for solving differential equations based on the DifferentialEquations.jl julia library."
+readme = "readme.md"
+repository = "https://gitlab.rcjohnstone.com/connor/differential-equations"
+license = "MIT"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html