This is a production release of go-codec.

Changes include:

• treat an array with all zero values as empty, and omit if omitempty=true
• module support: ensure module dependencies are auto-generated by go tool
• support go 1.20: needed fix for growslice in unsafe mode
• add support for go 1.13 error wrapping
• codecgen: optimize canonical encoding, handling extensions, named types and ordered keys
• codecgen: handle canonical encoding of map and struct well
• codecgen: skip type aliases
• codecgen: fix spurious errors in generated code calling codec.Selfer encode methods

Please try it out and share your experiences.