Update CHANGELOG.md

Author: MrClock8163

CHANGELOG.md

@@ -20,6 +20,8 @@ The project uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - Renamed `parsebool` to `parse_bool`
 - Renamed `toenum` to `get_enum`
 - Renamed `enumparser` to `get_enum_parser`
+- Updated GeoCom FTR `download` to return `bytes` instead of `str`
+- Updated GeoCom FTR `download_large` to return `bytes` instead of `str`
 
 ### Fixed