Isomorphic Node Constants

The `iso-constants` package provides Node.js's `process.constants` values in a way that is usable across both Node.js and browser environments. It aims to offer a consistent set of system-level constants, such as `RTLD_LAZY` or `UV_THREADPOOL_SIZE`, regardless of the execution context. Currently at version `0.1.2`, the library maintains a generally low release cadence, primarily issuing patch fixes, indicating a stable and focused scope rather than rapid feature development. A key differentiator is its automatic constant update mechanism, which runs during `npm install` to ensure the most current constants are available. This approach enables developers to write isomorphic code that relies on these specific constants without needing conditional logic for different runtimes, simplifying cross-environment development.