v0.3.0

Changelog

• e18911b add code doc
• a24e531 go mod tidy
• 0576388 go mod tidy
• f509af1 housekeeping
• 2c51291 internal/flag
• 57ba33a internal/ptr
• d834400 ptr: int
• dbdd131 update README and CHANGELOG
• 9ad31b0 update README.md file
• 4901236 update goreleaser
• c5dc2ef update goreleaser
• 9b4a3ae update main.go
• 36157f7 update stressy.go
• b505b3b updates