When a player character harvests a resource node in the world,
for example a herb with herbalism or a ore node with mining,
an appropriate event is registered. It includes according
event type designation, looted item name and quantity, as well as
the name of the resource node harvested. This new functionality
was only tested with herbalism so far.

It is expected that opening of chests or crates by a player character
in the game to be handled similarly.

Fishing might be handled incorrectly or produce errors
after this update.

Events registered by the add-on are serialised as a Lua table literal.
Specifically, each event is represented as a Lua table with
a numerical index, instead of a string map. This was done this way
in a hope that export to CSV format will become more trivial.
However, the need to extend the number of properties per an event
arises. For example, only the looted item's localised name is
insufficient for practical analysis. Therefore, registry format
revision might be required.