v1.18.1

This release ships no features or bug fixes. It's merely a documentation update.

Documentation:

• Overhaul of developer documentation
• PowerShell examples for publish documentation (#138, thanks to @Joeharrison94)
• Additional examples for NodeRED, Gatus, Sonarr, Radarr, ... (thanks to @nickexyz)
• Fixes in developer instructions (thanks to @Fallenbagel for reporting)