🐧 Oceananigans v0.5.3

What's new

• Updated versions of CUDA dependencies.
• Free convection, wind stress, and mixed layer seasonal cycle examples.
• Added actual CPU and GPU examples to README and documentation.
• Updated 3D contourf plotting script to also plot vertical profile diagnostics.
• New wind stress and free convection with wind stress movies.
• Added performance benchmark plots in README.
• Added development team section to README.