The v0.1.0 Hex package uses an explicit package[:files] list so release
contents do not depend on Hex defaults.
Included files
The release package should include:
.formatter.exsmix.exsREADME.mdLICENSE.mdCHANGELOG.mdlib/docs/
The docs/ directory is included because docs() references documentation
extras such as docs/module-responsibilities.md. Keeping the whole directory in
the package prevents future extras from being added to HexDocs while being left
out of the release package.
Excluded files
The release package should not include local or generated artifacts such as:
_build/deps/doc/tmp/cover/.elixir_ls/priv/plts/test/
These files are useful during development, but they are not required by users of the package.
Local inspection
Before publishing, inspect the actual package contents:
mix package.contents
This command builds and unpacks the Hex package under _build/hex_package_contents
and checks that required release files are present while generated artifacts are
absent.