Log Message:
ledger: update to 3.1.2.

* 3.1.2 (2019-02-05)

- Increase maximum length for regex from 255 to 4095 (bug #981)

- Initialize periods from from/since clause rather than earliest
  transaction date (bug #1159)

- Check balance assertions against the amount after the posting (bug #1147)

- Allow balance assertions with multiple posts to same account (bug #1187)

- Fix period duration of "every X days" and similar statements (bug #370)

- Make option --force-color not require --color anymore (bug #1109)

- Add quoted_rfc4180 to allow CVS output with RFC 4180 compliant quoting.

- Add support for --prepend-format in accounts command

- Fix handling of edge cases in trim function (bug #520)

- Fix auto xact posts not getting applied to account total during
  journal parse (bug #552)

- Transfer null_post flags to generated postings

- Fix segfault when using --market with --group-by

- Use amount_width variable for budget report

- Keep pending items in budgets until the last day they apply

- Fix bug where .total used in value expressions breaks totals

- Make automated transactions work with assertions (bug #1127)

- Improve parsing of date tokens (bug #1626)

- Don't attempt to invert a value if it's already zero (bug #1703)

- Do not parse user-specified init-file twice

- Fix parsing issue of effective dates (bug #1722, TALOS-2017-0303,
  CVE-2017-2807)

- Fix use-after-free issue with deferred postings (bug #1723, TALOS-2017-0304,
  CVE-2017-2808)

- Fix possible stack overflow in option parsing routine (bug #1222,
  CVE-2017-12481)

- Fix possible stack overflow in date parsing routine (bug #1224,
  CVE-2017-12482)

- Fix use-after-free when using --gain (bug #541)

- Python: Removed double quotes from Unicode values.

- Python: Ensure that parse errors produce useful RuntimeErrors

- Python: Expose journal expand_aliases

- Python: Expose journal_t::register_account

- Improve bash completion

- Emacs Lisp files have been moved to https://github.com/ledger/ledger-mode

- Fix build under MSYS (32-bit).

- Fix build under Cygwin.

- Various documentation improvements