c45fbb9149
**BREAKING:** - The `deepMerge` exported from payload now handles more complex data and is slower. The old, simple deepMerge is now exported as `deepMergeSimple` - `combineMerge` is no longer exported. You can use `deepMergeWithCombinedArrays` instead - The behavior of the exported `deepCopyObject` and `isPlainObject` may be different and more reliable, as the underlying algorithm has changed