postgresql-tx-simple-0.2.0.0: CHANGELOG.md

# Change log

## 0.2.0.0

* Updated for postgresql-tx-0.2.0.0.
* Added `HasCallStack` constraints in transaction runners.
* Added more transaction runners: `withTransactionMode`, `withTransactionModeRetry`, `withTransactionSerializable`.
* Moved internals to an `Internal` module.

## 0.1.0.0

* Initial release