Hugo-gettext

- [Line numbers are added to the occurrences of reference links, instead of using 0](https://github.com/PhuNH/hugo-gettext/commit/80e15241092a427eed89c54a1013c337b624e504)
- [RTL languages can be defined in config file or by a custom function](https://github.com/PhuNH/hugo-gettext/commit/9d76159739a8df233caebf4e844e0b319d8bb473)

**Full Changelog**: https://github.com/PhuNH/hugo-gettext/compare/v0.4.0...v0.4.1

- Split the project into [mdit-py-i18n](https://github.com/PhuNH/mdit-py-i18n) and [markdown-gettext](https://github.com/PhuNH/markdown-gettext), and inherit from them
- Use OOP instead of procedural programming

**Full Changelog**: https://github.com/PhuNH/hugo-gettext/compare/v0.3.0...v0.4.0

The PO folder must contain one sub-folder for each language, each sub-folder contains PO files in that language.

**Full Changelog**: https://github.com/PhuNH/hugo-gettext/compare/v0.2.0...v0.3.0

Support attribute after blocks and titles
- Blocks: blockquote, hr, list, paragraph, table, definition list, setext heading
- Titles: atx heading, setext heading

For setext heading: if both title attributes and block attributes are present, title ones are kept, block ones are ignored.

**Full Changelog**: https://github.com/PhuNH/hugo-gettext/compare/v0.1.3...v0.2.0

Use the correct indent for shortcodes in generation step.

**Full Changelog**: https://github.com/PhuNH/hugo-gettext/compare/v0.1.2...v0.1.3

[Fix l10n renderer](https://github.com/PhuNH/hugo-gettext/commit/2aca0196009d9fd0c919728c3265db0bc878c90d)

No need to require hg_config in env for rendering object strings.