Can be helpful when reading Ledger files, where assertions may have
different semantics; or for getting some answers from your journal
to help you fix your assertions.
Could be called --no-assertions, but this might create surprise when it
has an effect contrary to --no-new-accounts.
I had to add another flag throughout the parsers & journal read
functions, ok for now.
- The CSV reader no longer writes a "(stdin).rules" file when reading
from stdin.
- Selection of reader(s) is now smarter when input is coming from stdin.
Previously, all readers were considered applicable for stdin. This
meant that when reading a CSV file from stdin, the journal and timelog
readers were always tried first, and if the CSV file was unparseable,
you'd see the first (journal) reader's error instead of the CSV
reader's. Now, the readers do some basic content sniffing when
reading stdin, so it generally tries only the one right reader and
we'll see the right errors.
- The read system now has more debug output.
