* chore: add /v2 to import module path
go mod requires semantic versioning with versions greater than 1.x
This was a mechanical update by running:
```
go install github.com/marwan-at-work/mod/cmd/mod@latest
mod upgrade
```
Migrate generated files to import /v2
* Fix gen
By upgrading hc-install, we benefit from increased performance
in checksum verification introduced here:
- 858962c71d
Also:
- Made minor improvements to tests
- Excluded TestInstall from the race detector
