| A | ↘ | B | Arrays got worse |
| ⇢ | B | Arrays::mergeRecursiveCustom() added | |
| ⇢ | A | Arrays::unique() added | |
| ⇢ | A | Arrays::keepUniqueColumnValues() added | |
| ⇢ | A | Arrays::mergePreservingDistincts() added | |
| ⇢ | A | Arrays::cleanMergeBuckets() added | |
| B | ↗ | A | ChainableArray_Utils_Trait::mergeRecursiveCustom() improved |