We now parse account directives, like Ledger's. We don't do anything
with them yet. The default parent account feature must now be spelled
"apply account"/"end apply account".
Timedot is a plain text format for logging dated, categorised
quantities (eg time), supported by hledger. It is convenient for
approximate and retroactive time logging, eg when the real-time
clock-in/out required with a timeclock file is too precise or too
interruptive. It can be formatted like a bar chart, making clear at a
glance where time was spent.
