Update CHANGELOG.md and CONTRIBUTORS.md with @eelkevdbos patch

Author: althonos

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+
+## Unreleased
+
+### Changed
+- Make `FS.upload` explicit about the expected error when the parent directory of the destination does not exist
+  [#445](https://github.com/PyFilesystem/pyfilesystem2/pull/445).
+
+
 ## [2.4.12] - 2021-01-14
 
 ### Added

CONTRIBUTORS.md

@@ -5,6 +5,7 @@ Many thanks to the following developers for contributing to this project:
 - [Andreas Tollkötter](https://github.com/atollk)
 - [C. W.](https://github.com/chfw)
 - [Diego Argueta](https://github.com/dargueta)
+- [Eelke van den Bos](https://github.com/eelkevdbos)
 - [Geoff Jukes](https://github.com/geoffjukes)
 - [Giampaolo Cimino](https://github.com/gpcimino)
 - [Justin Charlong](https://github.com/jcharlong)