Better names for methods

[Ademan]

It looks like LocalUtxo was renamed to LocalOutput in master, which seems like a great improvement in clarity. I came across #665 trying to determine whether or not Wallet::get_utxo actually returns unspent outputs or not. I'd propose renaming the rest of the wallet API (and database API) to reflect this type change in 1.x

[Ademan]

Maybe this is better labeled as a discussion.

[notmandatory]

Is the proposal here to find places in the new 1.0 APIs where we return LocalOutput and make sure the function names and docs are updated to not use the terms unspent ? I found a couple cases of this in the bdk crate:

• LocalOutput struct docs
• Utxo enum docs ? I'm not 100% sure this one is wrong

Are there other places that need fixing?

[ValuedMammal]

Feel free to leave suggestions on #1221 as well, where the idea is to come up with more idiomatic names

[notmandatory]

A small change but I think we should push to 2.0 milestone.

[nondiremanuel]

get_utxos seems in fact getting utxos