SYNOPSIS code doesn't works.
Can't locate object method "default" via package "TB2::NoHistory" at - line 2.
Thanks for spotting that. TB2::History (and thus subclasses) were changed to no longer need a default object.
TB2::NoHistory is likely to go away, TB2::History will not record events by default (see #198), so I might as well just delete it before it confuses people.
Remove TB2::NoHistory, it is unmaintained and has no future.
TB2::History will take over this role eventually (see #198). Meanwhile, there's no
point in letting people rely on a half implementation that's going to be deleted.