Pyventory

✨ Allow lists of instances in inventory data (23)
♻ Migrate to `poetry` and cover all with type annotations (22)

Fixed:

* 20 Use `.tf.json` instead of `.tf` for Terraform export
* 21 Lists containing maps should have `type="map"` defined for Terrafom

Fixed:
* Revert back to `hosts` argument in `ansible_inventory`.

Added:
* 17 Allow to use calculated value of an asset class

Added:
* 11 Terraform vars export

Removed:
* 14 Drop Python 2 support

Fixed:
* 12 Ensure asset classes are being identified uniquely

Fix attribute values are not substituted in some cases.