csv: don't count fields in skipped lines (fixes #177)
csv: allow an empty first name in fields list (fixes #178)
cli: options before the add-on are also passed to it (fixes #182)
add: don't apply a default commodity to amounts on entry (fixes #138)
aregister: fix date filtering with disordered txns (fixes #184)

Fix a refactoring-related regression that the tests missed: if
transactions were not ordered by date in the journal, register
could include postings before the report start date in the output.
update changelog
bump version to 0.23.1
add: drop an obsolete functional test