v0.4.0

Breaking change with yaml config file syntax

What's Changed

• Bump github.com/alecthomas/kong from 0.8.0 to 0.8.1 by @dependabot in #120
• Single engine search by @hiddenMedic in #122
• Categories by @hiddenMedic in #119
• fixed all linting errors by @aleksasiriski in #124
• Linting CI by @aleksasiriski in #123
• Small refactor, mostly logs and cli flags by @aleksasiriski in #121

Full Changelog: v0.3.2...v0.4.0