Version 2.2.9

• Regenerate README file [#275]
• Regenerate README file [#273]
• Regenerate README file [#272]
• Fix tests [#268]
• make-pot: add subtract-and-merge flag [#267]
• Use more inclusive language in arg description [#266]
• Add new --update-mo-files flag to make-json [#265]
• Add new flag to omit source code references [#264]
• Add ext-mbstring to list of suggested dependencies [#263]
• Prevent adding JS comments to multiple strings [#261]
• Fix string extraction when using template literals [#260]
• Update version constraint for mck89/peast [#259]
• Fix plural extraction in JS [#258]
• Remove now unneeded workaround in JS scanner [#256]
• Extract strings for translation from theme.json [#254]
• Fix string extraction from block.json [#253]
• Add support to IterableCodeExtractor for symlinks. [#249]