React Shallow Equal Utilities

The `react-shallow-equal` package provides specific utility functions for performing efficient shallow equality checks within React and React Native environments. It exposes `propsEqual`, `elementsEqual`, and `stylesEqual` functions, designed primarily to optimize component re-renders through `shouldComponentUpdate` by comparing component properties, React elements, and style objects. The current stable version is 0.1.1. However, the package has not seen updates in approximately 8 years, making its release cadence non-existent. It is a fork of `lelandrichardson/shallow-element-equals` and utilizes concepts from `lelandrichardson/style-equal`. Its key differentiator was its specialized focus on React-specific shallow comparisons, but modern React development largely utilizes `React.PureComponent` and `React.memo` for similar optimizations.