Release refs/tags/v1.6.0-pre.1

Most notable is bringing back global env variable substitution from #227

Will be targeting a proper release mid november if no bugs are raised against the pre-release.

What's Changed

• Add whitespace tests. by @cjyar in #210
• Bump actions/setup-go from 3 to 4 by @dependabot in #207
• Update cmd.go by @Adamsbite in #221
• Fix panic because of wrong function by @lotusirous in #223
• chore: fix typo by @ALX99 in #231
• Re-add global env variable substitution by @Envek in #227

New Contributors

• @cjyar made their first contribution in #210
• @Adamsbite made their first contribution in #221
• @lotusirous made their first contribution in #223
• @ALX99 made their first contribution in #231
• @Envek made their first contribution in #227

Full Changelog: v1.5.1...v1.6.0-pre.1