This is an experiment to allow inserting emojis directly without adding extra prefixes like @ and : but insteas using ,comma in a name as a substitute
For example, for git emojis:

• @⭾boo → :bookmark:
• @⭾,boo → 🔖 (comma as a second prefix, but only after autocompletion event has been started)
• @⭾book, → 🔖 (comma as a suffix so you can think about what you want to insert later after finding the right name, which I think might be a better option)
  The downside is that the list of emoji is more polluted now with dupes, so added dedicated prefix variant as well for testing
• !⭾book → 🔖(git emojis)
• |⭾book → 📖 (regular emojis)

This also includes

• updates of the emoji datasets-
• adding gitmojis data https://github.com/carloscuesta/gitmoji (they have more emojis
  • it's a bit more verbose, e.g.
    • ["🚧\tWIP", ":construction:"] is Work in progress (though wip sill works in search due to fuzzy matching)
  • some emojis are mismatched
  • ["🚨\ttests", ":rotating_light:"] used for a fix, 🧪 used for tests
  • ["📚\tdocumentation", ":books:"], 📝
  • ["🐎\tperformance", ":racehorse:"], ⚡️
  • or missing ["📇\tmetadata", ":card_index:"]
    )
• cleaning up ST3 variant so it was easier to test config without an extra set of dupe emojis
• removed the previous duplication with @ which I don't think was needed in a pure ST4 variant

!!!: due to ↑ this can't be merged as is and the repo would need to register support for different ST version with package control with different repo tags (e.g., 2.0.0-st3 and 2.0.0-st4 or something)

• the build script is updated to generate the full GithubEmoji.sublime-settings config

closes #15