Why this matters
A public changelog gives calculator updates a stable citation trail: what changed, when it changed, and which tools or quality gates were affected.
Public maintenance record
CalculationTime records formula, schema, crawl, accessibility and trust changes so readers and crawlers can see that the tools are actively maintained.
A public changelog gives calculator updates a stable citation trail: what changed, when it changed, and which tools or quality gates were affected.
Entries focus on meaningful formula, source, crawl, schema, accessibility, converter consolidation and trust-boundary work, not routine formatting churn.