The limit was mostly imposed because of the actually repeated
lines, which would scroll off the screen. Now that the quantity
is just displayed as a number, I don't really see any technical
reason for a low limit; maybe 200 is still too low.
There are some cases where repetition can be used with multi user transaction,
specifically if the repetition is done before any multi user stuff is added...
The 'stock' plugin uses the 'product_id' field in the cart item, but
this was not copied by the 'repeat' plugin. The confusion is caused by a
mismatch between the API for RevBank::Cart->add and the internal
representation.
