v4.0.0

Breaking

• dropped support for node v12
• support for bundle-stats v4

Others

• Update dependencies by @vio in #615
• chore(deps): bump terser from 5.14.0 to 5.14.2 by @dependabot in #666
• Update dependencies by @vio in #667

Full Changelog: v3.1.3...v4.0.0