Merge PR #4748: Write-Through Inter-Block Cache

CHANGELOG.md

@@ -37,9 +37,11 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
-
 ### API Breaking Changes
 
+* (store) [\#4748](https://github.com/cosmos/cosmos-sdk/pull/4748) The `CommitMultiStore` interface
+now requires a `SetInterBlockCache` method. Applications that do not wish to support this can simply
+have this method perform a no-op.
 * (modules) [\#4665](https://github.com/cosmos/cosmos-sdk/issues/4665) Refactored `x/gov` module structure and dev-UX:
   * Prepare for module spec integration
   * Update gov keys to use big endian encoding instead of little endian
@@ -48,7 +50,6 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * (rest) [\#4783](https://github.com/cosmos/cosmos-sdk/issues/4783) The balance field in the DelegationResponse type is now sdk.Coin instead of sdk.Int
 
-
 ### Features
 
 * (cli) [\#4973](https://github.com/cosmos/cosmos-sdk/pull/4973) Enable application CPU profiling
@@ -80,6 +81,10 @@ longer panics if the store to load contains substores that we didn't explicitly
 * (simulation) [\#4906](https://github.com/cosmos/cosmos-sdk/issues/4906) Add simulation `Config` struct that wraps simulation flags
 * (store) [\#4792](https://github.com/cosmos/cosmos-sdk/issues/4792) panic on non-registered store
 * (types) [\#4821](https://github.com/cosmos/cosmos-sdk/issues/4821) types/errors package added with support for stacktraces. It is meant as a more feature-rich replacement for sdk.Errors in the mid-term.
+* (store) [\#1947](https://github.com/cosmos/cosmos-sdk/issues/1947) Implement inter-block (persistent)
+caching through `CommitKVStoreCacheManager`. Any application wishing to utilize an inter-block cache
+must set it in their app via a `BaseApp` option. The `BaseApp` docs have been drastically improved
+to detail this new feature and how state transitions occur.
 
 ### Bug Fixes