Also print checkpoints hex after serialize
Expose estimated FP rate from WSBIP37Filter
Refactoring, reset != reload
Clean, separate reset/reload Bloom filter methods

Reload restarts from last filter FP rate.
Range is actually a delta
Raised max block count before filter reload
Fixed stale undefined method
Verbose messages
Fixed Bloom filter events

- On reload just update observed FP rate
- Reset Bloom filter and parameters right before sync
Transaction logging is verbose