Merge pull request #446 from nf-core/dev

PR for Release 2.4.0

Merge pull request #344 from nf-core/dev

Release 2.3.1 PR

Merge pull request #305 from nf-core/dev

Merge pull request #296 from nf-core/dev

PR for 2.2.4 bugfix release

Merge pull request #280 from nf-core/dev

Patch Release PR 2.2.3

Merge pull request #277 from nf-core/dev

Release PR for 2.2.2 Patch Release

Merge pull request #241 from nf-core/dev

Release 2.2.1

Merge pull request #234 from nf-core/dev

Dev -> Master for 2.2.0 release

Update CHANGELOG.md

Update CHANGELOG.md