v2.0.0
Initial release of HCL 2, which is a new implementation combining the HCL 1 language with the HIL expression language to produce a single language supporting both nested configuration structures and arbitrary expressions.
HCL 2 has an entirely new Go library API and so is not a drop-in upgrade relative to HCL 1. It's possible to import both versions of HCL into a single program using Go's semantic import versioning mechanism:
import (
hcl1 "github.com/hashicorp/hcl"
hcl2 "github.com/hashicorp/hcl/v2"
)