version 2.2.5 release v2.2.5: fix negative yerr crash in echo resolution plot calc_fres() scaled the propagated resolution error e_fres by fres itself rather than abs(fres), so a negative fitted resolution produced a negative e_fres, and matplotlib's errorbar() rejects a negative yerr outright, crashing `nseplot ec`. ChangeLog documented in a follow-up commit. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>