BREAKING CHANGES: Please review our upgrade guide.
Update Terraform SDK to v2 (#594).
Remove deprecated helm_repository resource and data source (#600)
Remove implicit support for KUBECONFIG (#604)
Remove load_config_file attribute (#604)
Remove set_string attribute from helm_release (#608)
IMPROVEMENTS:
Add support for multiple paths to kubeconfig files (#636)
Remove remote dependencies from test-fixtures (#638)
Set up matrix build to run acc tests against different tf versions (#637)