Add test for findAndCountAll with required belongsTo and limit

Test currently fails. See issue #1953.
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
restore breaking test
Undestroy method for paranoid models
Return failure from undestroy before hooks execute
Fix test data typo
Promisify tests
Remove superfluous .then
Rename undestroy to restore
Update changelog with BC breaking hstore change
Remove unnecssarily asynchronous tests
Promisify tests
More promises
Text fix
Better tests