* Make sure the Canopy activation block is a finalized checkpoint block
This enables ZIP-221 chain history from Canopy activation onwards.
* Clarify that the mandatory checkpoint test includes Canopy activation
The test was correct, but the docs and assertion message did not include activation.
* Document that the mandatory checkpoint includes Canopy activation
Co-authored-by: teor <teor@riseup.net>
* create readme for utils and checkpoints
* add link to checkpoint usage to book
Co-authored-by: Deirdre Connolly <durumcrustulum@gmail.com>
Co-authored-by: teor <teor@riseup.net>
Alfredo Garcia
teor