Log Message:
finance/ledger: Update to 3.2.0

- Port Python support to Python 3

- Entities are no longer regarded as defined due to being part of a
  cleared transaction. `--explicit` is effectively enabled by default
  and is now a no-op (PR #1819)

- Add `--average-lot-prices` to show the average of lot prices

- Add support for `%F` date format specifier (bug #1775)

- Add `commodity_price(NAME, DATE)` function

- Add `set_commodity_price(NAME, DATE)` function

- Fix buffer overflow when evaluating date

- Fix balance assertions on accounts with virtual posts (bug #543)

- Fix segfault with `ledger print` (bug #1850)

- Ensure that `apply` directives (like `apply account`) have the
  required argument (bug #553)

- Format annotations using a date format that can be parsed

- Change `--invert` to invert displayed amounts and totals, not amounts
  (bug #1803)

- Correct the way parens are parsed in query expressions

- Compare price annotations using their textual rendering

- Fix build failure with utfcpp 3.0 (bug #1816)

- Fix build failure due to ambiguous type (bug #1833)