v0.2.1

OptimalApplication v0.2.1

Diff since v0.2.0

• Improve maintainability with ASCII-friendly variable names, better organization of files in /src/, qualified using Foo: bar statements
• Make Market structs mutable—useful if you want to solve a VariedCostsMarket for various values of mkt.H
• Improve testing routine by adding Aqua.jl and a larger matrix for GH actions