* Update to vanilla tx pool error
* Prevent a non ready tx replacing a ready tx
* Make tests compile
* Test ready tx not replaced by future tx
* Transaction indirection
* Use StateReadiness to calculate Ready in `should_replace`
* Test existing txs from same sender are used to compute Readiness
* private-tx: Wire up ShouldReplace
* Revert "Use StateReadiness to calculate Ready in `should_replace`"
This reverts commit af9e69c8
* Make replace generic so it works with private-tx
* Rename Replace and add missing docs
* ShouldReplace no longer mutable
* tx-pool: update to transaction-pool 2.0 from crates.io
* tx-pool: generic error type alias
* Exit early for first unmatching nonce
* Fix private-tx test, use existing write lock
* Use read lock for pool scoring