Ethan Buchman de5a6010f0
fix DynamicVerifier for large validator set changes (#3171)
* base verifier: bc->bv and check chainid

* improve some comments

* comments in dynamic verifier

* fix comment in doc about BaseVerifier

It requires the validator set to perfectly match.

* failing test for #2862

* move errTooMuchChange to types. fixes #2862

* changelog, comments

* ic -> dv

* update comment, link to issue
2019-01-21 09:21:04 -05:00
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