Previously, if you specified no report interval, the text output of
these commands was a simple report like the original balance command,
with amounts on the left and account names on the right. Also,
balances used arithmetic sign like the balance command.
Now it always draws a table, with account names in the left
column, and shows balances with normal-positive sign, consistent with
the multicolumn reports. Less code, fewer bugs.
Add "fixed" to the regex used to exclude asset accounts from cashflow
reports. Assumes accounts are set up something like:
assets:fixed assets:equipment
assets:fixed assets:vehicles
assets:fixed assets:buildings
