Clean up re-exports + pre-release tracking

[ValuedMammal]

When discussing plans to publish a release I found a few TODO items

• Decide which types to re-export
• We placed the builder module behind a "wallet" feature, so I think also add required-features = ["wallet"] for the wallet example in Cargo.toml
• Depend on a proper version of kyoto-cbf

[rustaceanrob]

we need the kyoto re-exports so a Client can be built without the builder module but all of the rust-bitcoin re-exports are probably not necessary

[rustaceanrob]

let's hold off on release until we chat with Steve oct 3

[rustaceanrob]

after doing a little reading, i might push back a bit on the first bullet. although it is not necessarily encouraged, since kyoto is very tightly coupled with rust-bitcoin types, it makes sense to re-export them imo. in an effort to never force the user to add kyoto, i think it makes sense to give them the types they will come across, even if re-exports from rust-bitcoin

[ValuedMammal]

Yeah I would agree with that as long as we can justify it as a deliberate choice on behalf of the user

[rustaceanrob]

would you consider that a doc-level thing? or in the readme?

[ValuedMammal]

I don't think you need to explain it anywhere, just that the effect is what you say, i.e. the user doesn't need to pull in extra deps.