Allow loading of binary lua files

[allight]

This is useful for some testing applications.

[allight]

Failures seem to be the same ones that appear running cargo test on master.

[jugglerchris]

Hi,
Thanks for the contribution!
However it's deliberate that load_chunk doesn't load binary/compiled lua files, so this can't be merged as is.
The intention (which hasn't happened yet) is to add a new, unsafe API which does allow loading binary Lua files. See #116 and #145 for some previous discussion.
I think a method on Chunk like:

pub unsafe fn into_function_unsafe(self) -> Result<Function<'lua>>

seems reasonable, but I'd be interested in whether you think that works for your use case.

I'll look into why the CI is failing.

[jugglerchris]

FWIW I've fixed the CI issues (which I raised separately as #207).

[jugglerchris]

This has been addressed as part of #236.