update changelog for rc5 (#5501)

## Description

update changelog with updates in rc5

Closes: #XXX

CHANGELOG.md

@@ -1,5 +1,38 @@
 # Changelog
 
+## v0.34.0-rc5
+
+*October 13, 2020*
+
+
+Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermint).
+
+### BREAKING CHANGES
+
+- CLI/RPC/Config
+
+- Apps
+    - [ABCI] \#5447 Remove `SetOption` method from `ABCI.Client` interface
+
+- P2P Protocol
+
+- Go API
+    - [evidence] [\#5499](https://github.com/tendermint/tendermint/pull/5449) `MaxNum` evidence consensus parameter has been changed to `MaxBytes` (@cmwaters)
+
+- Blockchain Protocol
+
+### FEATURES
+
+### IMPROVEMENTS
+
+- [privval] \#5434 `NewSignerDialerEndpoint` can now be given `SignerServiceEndpointOption` (@erikgrinaker)
+
+- [config] \#5433 `statesync.rpc_servers` is now properly set when writing the configuration file (@erikgrinaker)
+
+### BUG FIXES
+
+- [privval] \#5441 Fix faulty ping message encoding causing nil message errors in logs (@erikgrinaker)
+
 ## v0.34.0-rc4
 
 *September 24, 2020*

CHANGELOG_PENDING.md

@@ -1,6 +1,6 @@
 # Unreleased Changes
 
-## v0.34.0-rc5
+## vX.X
 
 Special thanks to external contributors on this release:
 
@@ -11,12 +11,10 @@ Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermi
 - CLI/RPC/Config
 
 - Apps
-    - [ABCI] \#5447 Remove `SetOption` method from `ABCI.Client` interface
 
 - P2P Protocol
 
 - Go API
-    - [evidence] [\#5499](https://github.com/tendermint/tendermint/pull/5449) `MaxNum` evidence consensus parameter has been changed to `MaxBytes` (@cmwaters)
 
 - Blockchain Protocol
 
@@ -24,10 +22,4 @@ Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermi
 
 ### IMPROVEMENTS
 
-- [privval] \#5434 `NewSignerDialerEndpoint` can now be given `SignerServiceEndpointOption` (@erikgrinaker)
-
-- [config] \#5433 `statesync.rpc_servers` is now properly set when writing the configuration file (@erikgrinaker)
-
 ### BUG FIXES
-
-- [privval] \#5441 Fix faulty ping message encoding causing nil message errors in logs (@erikgrinaker)