Markdown support in Release Notes

I noticed that many packages (including those from Microsoft) use Markdown in the Release Notes section, but PS Gallery does not do any Markdown processing. Some other NuGet-based galleries (e.g. Chocolatey) support Markdown in at least the Release Notes and Description sections.

Full markdown support is probably not necessary, but bulleted lists, italic and bold would be a good start.

Thanks for the comment, Michael. This is on our Todo list.