DoughCalc v21 deployed. Unit suggestions now recalculate for tsp/tbsp/cup/each with per-ingredient gram conversion figures (not grams-only anymore) - switching the unit dropdown after picking a preset recomputes the amount instead of leaving a stale gram number. Add button click handler wrapped in try/catch so any residual failure shows a visible error message instead of silently doing nothing. Root cause of persisting 'not showing up' complaint after v20 not fully confirmed - asked USR369 for exact repro steps if it still fails.