Update Terraform and some fixes

[mcfearsome]

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Closes #64
Closes #20

Release note for CHANGELOG:

- Update Terraform to 0.13.4
- Fixes a bug where the configuration wasn't in an "uploaded" status before trying to run

[redeux]

Hey @mcfearsome, thanks for the PR. We're attempting to go with another pattern for keeping up with Terraform updates, see #77.

Would you mind splitting out your fix for #20 into a separate PR so we can look at it independently?

[mcfearsome]

@redeux that's a much better route! sure I can split it out sometime over the next day or so.