Updated the README to reflect the current year 2026. This administrative update ensures documentation remains accurate as the project continues to evolve.

This update introduces significant performance improvements to the Python diagnostic tools by introducing multi-processed, blockwise gravitational potential energy calculations. Additionally, new simulation scenarios were added to model expanding hydrogen clouds, with documentation updated accordingly.

We have successfully implemented a proof-of-concept for the Barnes-Hut algorithm in the Barnes_Hut branch. This new visualization demonstrates that the spatial partitioning approach is working as expected.

Updated the project README to provide a more comprehensive guide on simulation inputs, project structure, and known limitations. This serves as a primary reference for users working with the n-body physics engine.

Updated image source and sizing parameters within the project's README to ensure better documentation presentation for users and contributors.

Updated the README to provide a better overview of the ParticleSimulator2 physics engine, detailing its objectives, structure, and usage. The documentation now includes comprehensive guidance on configuration inputs and performance tuning for the Barnes-Hut algorithm.

Corrected the filename casing for referenced images in the project's README, ensuring compatibility with case-sensitive file systems and improving documentation reliability.

Corrected a case-sensitivity mismatch for an animated GIF reference in the project documentation. This ensures the embedded image displays correctly across all operating system filesystems.

Updated the README for the ParticleSimulator2 2D physics engine to include a comprehensive user guide and detailed configuration documentation. The update covers compilation, input file structures for scenarios and objects, and advanced settings within the source code to help users better utilize the Barnes-Hut approximation implementation.

Updated the documentation in README.md to correctly reference the image asset for the moon and planet impact simulation. Proper documentation ensures users have a clear visual reference for the engine's capabilities.