chore: update logs module (#127)

docs: updates README (#125)

* docs: updates README

chore(deps): update logs module (#124)

fix: allow_s3 on logs bucket and define log_prefix (#123)

* fix: fixes #122

* chore: use latest version of s3-private-bucket module

* chore: use newer version of private bucket module

Merge pull request #115 from trussworks/remove-tags

remove default tags applied to resources

Merge pull request #114 from trussworks/update-module-versions

Update module versions

Merge pull request #110 from trussworks/deprecate-terraform-versions

deprecate older terraform versions

Set dynamodb billing mode to PAY PER REQUEST

On-demand billing is generally indicated when usage will be intermittent and unpredictable, as we expect with terraform state locks.

Merge pull request #102 from henworth/add-kms

feat: allow the use of an existing kms key

Merge pull request #75 from trussworks/aws-4

Provide an upgrade path to AWS provider 4.0