Summary This version is intended to be the final release of the "heavy-zero" only code that can only calculate the hyperfine structure of $^2\Sigma^+$ molecules that have only one nucleus with nonzero nuclear spin. This code is documented by a technote at doi:10.5281/zenodo.20171987, and there will be a full paper on this code at some point. What's Changed This software is now documented by a technote doi:10.5281/zenodo.20171987. There will be a full paper on this software Merged MS-43-PerturbationFramework by @nusgart in https://github.com/SpinlabMSU/AeF-hyperfine-structure/pull/5 This implements the PerturtbationFramework Updated compilation instructions Miscellaneous bugfixes Full Changelog: https://github.com/SpinlabMSU/AeF-hyperfine-structure/compare/v0.0.0-MS43-pre...v0.0.1-Last-BaF-only