Add io_context keyword argument

[MichaelHatherly]

Over in PumasAI/QuartoNotebookRunner.jl#143 @jkrumbiegel and I were trying to work out the most straightforward way to get the printing "correct" for types. This seems to be pretty straightforward to me.

I'm open to alternative namings of io_context, which seemed to most reasonable to match the rest of the keywords.

[MichaelHatherly]

CI failure will require #27 to fix first.

[mortenpi]

This pretty much LGTM, just a couple of suggestions. Feel free to add a CHANGELOG entry and bump the version, and we can get this tagged quickly.

I'm open to alternative namings of io_context, which seemed to most reasonable to match the rest of the keywords.

My initial gut reaction was iocontext, without the underscore, to match the IOContext type. But io_context is fine as well, so I'll leave that up to you.

[MichaelHatherly]

My initial gut reaction was iocontext, without the underscore, to match the IOContext type. But io_context is fine as well, so I'll leave that up to you.

I'll leave it as io_context, my reasoning being that IOContext is "IO Context" camelcased, so the lowercasing of that to snakecase should be io_context to preserve the two "words".

[mortenpi]

Thank you @MichaelHatherly!

[mortenpi]

JuliaRegistries/General#108841

[MichaelHatherly]

Thanks @mortenpi