nit: invalid Cargo categories

[bitnorbert]

I noticed all crates have this:

categories = ["bitcoin", "blockchain", "node"]

According to The Cargo Book, "Each category should match one of the strings available at https://crates.io/category_slugs, and must match exactly."

It's a limited set, and perhaps the only vaguely relevant valid category is "finance".

I assume invalid categories could be an issue upon publishing to crates.io.

[Davidson-Souza]

Oh, nice catch. Those should be keywords, not categories. Thanks for reporting this.

[jaoleal]

Would be nice to debate about it. I imagine that libfloresta and its children may have their own category.
Like "Database" for floresta-chain.

[Davidson-Souza]

Agreed, we may need to pick categories in a per-crate basis

[Davidson-Souza]

closed by #243