Deriving more traits for Error

[dr-orlovsky]

Currently due to limitation of error data structures from the upstream crates this is impossible. However next weeks I will be fixing rust-secp256k1, rust-bitcoin & rust-miniscript error types to a uniform format, so leaving this issue just not to forget to fix Error derives here once that will have be done.

[RCasatta]

@dr-orlovsky is this still an issue?

[dr-orlovsky]

Yes, and not all of the upstream PRs required for implementing more derives in rust-electrum are accepted yet (but most is already)