feature: the tfvars store keeps Terraform modules, their instances and the instances' variable files in PostgreSQL.

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.4.0
+
+feature: the tfvars store keeps Terraform modules, their instances and the instances' variable files in PostgreSQL.
+
+- `createTfvarsStore(pool)`: the tables `tf_modules`, `tf_instances` and `tf_variable_files`,
+  created at the first use, with `modules` (`list`, `put`, `delete`), `instances` (`list`,
+  `create`, `delete`) and `variables(module, instance)` (`read`, `write`, `remove`), whose writes
+  take the version read and answer `false` when the files changed since.
+- `versionOf`, `tfvarsText`, and the types `TfModule`, `TfInstance` and `TfvarsFileStatus` with
+  the patterns of their names, also exported from `/web`.
+- `pg` is an optional peer dependency, for the store.
+- `npm test` tests the store against a scratch database of the server the `PG*` variables name.
+
 ## 0.3.0
 
 feature: the key of a credential store may be a path of keys, so stores of several kinds share one object of config.json.