v0.1.0 Core analytical and numerical solvers

Fully working and efficient implementation of the analytical and numerical solvers for the muskingum method

What's Changed

• Direct Solve by @rileyhales in #1
• Improve Solvers by @rileyhales in #2

New Contributors

• @rileyhales made their first contribution in #1

Full Changelog: https://github.com/rileyhales/river-route/commits/v0.1.0