REQPY version 0.4.0.

An overview of the updates and new capabilities introduced in REQPY version 0.4.0. This release provides a complete Python framework for developing spectrally matched input motions. It implements a multi-stage, orientation-independent matching framework designed to match ground motions to target response spectra (such as RotDnn) while strictly satisfying minimum Power Spectral Density (PSD) and Fourier Amplitude Spectrum (FAS) regulatory criteria. Resources & Links: • GitHub Repository & Examples: https://github.com/LuisMontejo/REQPY • EarthArXiv Preprint (Methodology): https://doi.org/10.31223/X5Z49W • PyPI Project Page: https://pypi.org/project/reqpy-M/ Installation: To install or upgrade to the latest version with fast Konno-Ohmachi smoothing support, run the following command in your terminal: pip install --upgrade "reqpy-M[smoothing]"