faccf8b1e1 refactor: Enable -Wswitch for FeeEstimateHorizon (MarcoFalke)
Pull request description:
This enables the `-Wswitch` compiler warning for `FeeEstimateHorizon` by removing the `default` case in `switch` statements.
ACKs for top commit:
practicalswift:
cr ACK faccf8b1e1
jonatack:
ACK faccf8b1e1
hebasto:
ACK faccf8b1e1, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: 63a8dff6e8dead149ec2fa8319e7ff41022c9534d423d3086fd8f22be073dc4915f74c7fe9139ee681a8204730cf58c80ef40c93fb33032d586e68b4f78f557d