;areg: debug output
;areg: show a title indicating which account was picked
This might be a bit of a pain for scripting, but otherwise it can be
quite confusing if your argument matches an account you didn't expect.
;areg: improve CSV headings
;areg: show at most two commodities per amount
accountTransactionsReport now filters transactions more thoroughly, so
eg transactions dated outside the report period will not be shown.
Previously the transaction would be shown if it had any posting dated
inside the report period. Possibly some other filter criteria now get
applied that didn't before. I think on balance this will give slightly
preferable results.