Also, for release notes:
Notably, the old behaviour could allow small remainders to accumulate over time, in accounts that (a) often have an inexact posting amount or cost amount and (b) are never reconciled (typically equity, revenues, and expenses).
You can check for this more easily now, eg with a command like
hledger bal cur:\\$ -c '$1.000000000000' | rg '\...0*[1-9]'
(Show account balances, limited to the $ currency, overriding $'s display style to show 12 decimal places, and filter that to just the lines with a non-zero decimal digit in the 3rd place or beyond.)
This broke in 1.43.
Now we ignore any IOException whose message contains "broken pipe".
Hopefully this matches pre-1.43 behaviour and doesn't hide real errors.
This upgrades Account to enable it to store a multiperiod balance, with
a separate balance for each date period. This enables it do the hard
work in MultiBalanceReport.
Some new types are created to enable convenient operation of accounts.
- `BalanceData` is a type which stores an exclusive balance, inclusive
balance, and number of postings. This was previously directly stored
in Account, but is now factored into a separate data type.
- `PeriodData` is a container which stores date-indexed data, as well as
pre-period data. In post cases, this represents the report spans,
along with the historical data.
- Account becomes polymorphic, allowing customisation of the type of
data it stores. This will usually be `BalanceData`, but in
`BudgetReport` it can use `These BalanceData BalanceData` to store
both actuals and budgets in the same structure. The data structure
changes to contain a `PeriodData`, allowing multiperiod accounts.
Some minor changes are made to behaviour for consistency:
- --declared treats parent accounts consistently.
- --flat --empty ensures that implied accounts with no postings are not displayed, but
accounts with zero balance and actual postings are.
I was trying to insert a mention/link next to each command's specific
flags, but it's too disruptive given the complex ways we reuse and
generate these docs.
