1.8.0

Rust: anyswap-sdk, anyswap-core

• Breaking: HttpClient::new takes the Wallet that signs protected
  requests instead of its identity PrivateKey, and returns a Result.
  set_private_key is gone.

Minor

• Wallet erases its master key and seeds once its keys are derived, and its
  keys when it drops. A Mnemonic erases its words when it drops.

TypeScript: @blockstream/anyswap-sdk, @blockstream/anyswap-wasm

• Breaking: AnySwapClient takes the wallet that signs protected
  requests instead of auth.identityPrivkey. AnySwapAuth is gone.
• Breaking: signals and subscribe take no userId; they use the
  client's wallet.
• Breaking: Wallet.identityPrivkey is gone, and so are the bindings'
  signRequest and getPubkey: the client signs inside the wasm module, so
  the identity key never leaves it.