fix preloading has many with no result (#69)

Fix ValidateRequired: Don't check empty value with isZero (#67)

Fix validateRequired (#66)

Better isZero (#64)

Add license scan report and status (#59)

Signed-off-by: fossabot <[email protected]>

fix empty values when casting other changeset (#53)

emulate nested transaction using savepoint (#37)

* emulate nested transaction using savepoint

* tests for nested transaction

* fix error message

* fix postgres adapter

* fix stackoverflow

OptionsRequired to CastAssoc (#33)

* add options required to cast assoc

* change assocRequired to required

Added motivation