Building a Rust commandline tool: a towncrier clone

Enthusiastically embracing test-driven development as always, we attempt to write a minimal clone of a useful tool, towncrier, which allows us to build changelogs out of individual "newsfragment" files. By the end we have the outline of a decent solution that passes our first and only testcase! Read my blog at https://artificialworlds.net/blog Follow me on mastodon: [@andybalaam@mastodon.social](https://mastodon.social/@andybalaam)