Let inline components render without code block

[jzaefferer]

I have a slightly different usecase for this package than the 'styleguide'. I'd like to define some Markdown content, and mix in other React components, but without rendering those components as html.

The change for that seems pretty trivial, though I'm not sure what unintended effects this might have: https://github.com/jzaefferer/react-markdown-loader/commit/24a57c1e372f7aeba16573cd8c926aa83f26e36c#diff-6947033678b93d106e25614dd972e66fR39

If the usecase is valid and that approach okay, I can create a pull request with that change, without the package.json changes (I needed that since yarn won't install from git).

[jamesmfriedman]

I made quite a few changes to support this for my RMWC library. https://jamesmfriedman.github.io/rmwc/

Basically I wanted code only, render only, and render with code. I also wanted to be able to use inline import statements for my examples.

https://github.com/jamesmfriedman/react-markdown-loader