tetsy-kvdb-shared-tests 0.7.0

Shared tests for tetsy-kvdb functionality, to be executed against actual implementations
Documentation 
# Changelog

The format is based on [Keep a Changelog].

[Keep a Changelog]: http://keepachangelog.com/en/1.0.0/

## [Unreleased]

## [0.7.0] - 2021-01-27
### Breaking
- Updated `tetsy-kvdb` to 0.9. [#510](https://github.com/tetcoin/tetsy-common/pull/510)