Change RZR to BOQ as RZR was delisted in 2012
Batch price enquiries into groups of 10

Batch price enquiries into groups of 10 as ASX web page only handles up
to 10 at once.
Add test for 11 stocks to test batching into groups of 10.
also set info for rest of stocks from @all_stocks when aborting because
of failed retrieval
decode the response string before parsing.