changelog: Add entry about instructions metrics change
@@ -22,6 +22,9 @@ and this project adheres to [Semantic Versioning].
[[#410](https://github.com/ethereum/evmc/pull/410)]
- Previously deprecated `EVMC_CONSTANTINOPLE2` and `EVMC_LATEST_REVISION` revisions have been removed.
[[#411](https://github.com/ethereum/evmc/pull/411)]
+- In `evmc::instructions` library the undefined instructions have `0` gas cost
+ instead of previous `-1` value.
+ [[#425](https://github.com/ethereum/evmc/pull/425)]
## [6.3.1] - 2019-08-19
