* CLI: Add BlockhashSpec to tighten control over --blockhash
* Use BlockhashSpec
* Add a matches-free constructor
* More descriptive naming
(cherry picked from commit 966d077431
)
* CLI: Add BlockhashSpec to tighten control over --blockhash
* Use BlockhashSpec
* Add a matches-free constructor
* More descriptive naming
(cherry picked from commit 966d077431
)