Provide emoji version as RbConfig::CONFIG['UNICODE_EMOJI_VERSION']
The Emoji version is different from the Unicode version. Currently, the Unicode version is accessible from
RbConfig::CONFIG['UNICODE_VERSION'], but it's not possible to get the Emoji version.
I need the Emoji version for testing, so it would be good to make it available as
Background: Currently, the Unicode version is 10.0.0, the Emoji version is 5.0. For Ruby 2.6, the Unicode version will be 11.0.0, the Emoji version will be 11.0. The Unicode Consortium expects to keep the versions parallel (but not the same) going forward.
Matz, can you please approve or reject this request? I'll work on implementing it, or ask Nobu if I need help.