Build #19:   Bump pyyaml from 3.11 to 5.4 Bumps [pyyaml](https://github.com/yaml/pyyaml) from 3.11 ... on branch master almost 5 years ago

Build #3:   Align with PEP8, add uncommitted test file on branch master about 11 years ago

Build #10:   Update README on branch master almost 11 years ago