| ⇢ | A | Validate added | |
| ⇢ | A | HasOne added | |
| ⇢ | A | HasMany added | |
| A | ↛ | Validate removed | |
| A | ↛ | AttributeTrait removed |
| ⇢ | A | Validate::getRule() added | |
| ⇢ | A | HasOne::__construct() added | |
| ⇢ | A | HasMany::__construct() added | |
| ⇢ | A | Nested::calculateErrorKey() added | |
| ⇢ | A | Nested::canConcatenateErrorKey() added | |
| ⇢ | A | Nested::isPositiveInteger() added | |
| ⇢ | A | Validate::__construct() added | |
| A | ↘ | B | Each::validateValue() got worse |
| A | ↛ | AttributeTrait::rules() removed | |
| A | ↛ | Validate::__construct() removed | |
| A | ↛ | Validate::getRule() removed |