Release ledger2beancount 2.4
* Fix regressions introduced in version 2.3
* Handle price directives with comments
* Don't assume implicit conversion when price is on second posting
* Improve support for hledger
* Fix parsing of hledger tags
* Support commas as decimal markers
* Support digit group marks through `commodity` and `D` directives
* Support `end aliases` directive
* Support regex aliases
* Recognise total balance assertions
* Recognise sub-account balance assertions
* Add support for `define` directive
* Convert all uppercase metadata tags to all lowercase
* Improve handling of ledger lots without cost
* Allow transactions without postings
* Fix parsing issue in commodity declarations
* Support commodities that contain quotation marks
* Add `--version` option to show version
* Document problem of mixing `apply` and `include`