fix: bumping terraform version from 0.12.6 to 0.12.7 in circleci to include regexall function (#474)

feat: Enable support for Terraform 0.13 as a valid version by setting minimum version required (#455)

* added owner_id output (#1)

* Updated description of vpc_owner_id

* docs: Fixed README
Co-authored-by: V Malinics <47030027+vmalinics-managemy@users.noreply.github.com>
Co-authored-by: Anton Babenko <anton@antonbabenko.com>

I ran into the same issue as https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/126 because there's nothing in the documentation making it clear that `create_database_subnet_group` only has an effect if you also specify `database_subnets`.