Hstore empty string tests
Use pg-hstore for hstore parsing
Removed no longer supported nested hstore objects from tests. Improved hstore array handling.
Update pg-hstore
Merge fix
Update json test expectation
Update changelog with BC breaking hstore change
Remove unnecssarily asynchronous tests
Promisify tests
More promises
Text fix
Merge pull request #2295 from seth-admittedly/feature/hstore-test

Use pg-hstore for improved hstore handling