pub const UPDATE_HISTORY_LIMIT: usize = 20;Expand description
How many NotificationUpdate
records one row keeps. A progress notice that reports each step in its
wording records one update per step, and an id an app reuses for every
run of an operation gathers them from every run, so a row keeps the most
recent ones and drops the oldest. The row itself always shows the notice
as it now stands, whatever the history kept.