I created a dummy module to start working on the Parser component. It lists all files in the current working directory with no extension. In a directory that only contains files owned by Onigumo, such files are those fetched by the Downloader.

Downloaded files now have .raw extesion, they are no longer without an
extension at all.

Used Enum.map to trigger IO.puts instead of joining and printing in a
single blob.

Replace tabs with spaces.

Merged with the current master:

* Implemented behavior for Onigumo.Parser.
* Added Parser to CLI and environment.

Currently it doesn’t test anything for real. It’s just a test file
with a single test to be filled in.

The Onigumo.Component behavior requires main to return :ok.

Made the function public, so it is testable.

Test an empty directory. Made list_downloaded public for it to be testable.

Values are compared with ==, not with =. Fixing an unused variable warning.

The parametrization allows to test various combinations of expected
and unexpected files.