Nyaml

Bugfixes

- Removes that whitespaces after the comment sign (``) above and below the copyright are produced.
- Adds a blank line in the iso string generation to suppress rst warnings.

**Full Changelog**: https://github.com/FAIRmat-NFDI/nyaml/compare/v0.0.2...v0.0.3

Fixes a bug in the cli, that the `--output-file` argument was not working when converting `nxdl.xml` files.

A tool to convert yaml NeXus application definitions (nyaml) to nexus definitions language (nxdl).

Initial release 🎉🎉🎉