- upgrades to bdk 0.24 #1198
- adds a regression test for opening older wallets #1183
- adds a migration for older wallets that encounter the ChecksumMismatch
error #1182
Instead of leaking the tokio::sync:⌚:Receiver type in our
return value, we create a newtype that implements the desired
interface. This allows us to get rid of the `RateService` structs
and instead implement `LatestRate` directly on top of this struct.
Given that `LatestRate` is only used within the event_loop module,
we move the definition of this type into there.
