Update CHANGELOG.md

Author: jfy133

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### `Fixed`
 
 - [#882](https://github.com/nf-core/eager/pull/882) Define DSL1 execution explicitly, as new versions Nextflow made DSL2 default (♥ to & fix from @Lehmann-Fabian)
+- [#879](https://github.com/nf-core/eager/issues/879) Add missing threads parameter to pre-clipping FastQC for single end data that caused insufficient memory in some cases (♥ to @marcel-keller for reporting)
 
 ### `Dependencies`