2.12.3 - Super Scrabble

• Super Scrabble support (@kamilmielnik via #304)
• Fix vertical results not shown (@kamilmielnik via 5ad72cf)
• Simplify & document how to add a new language (@kamilmielnik via #301)
• Update package-lock.json to version 3 (@kamilmielnik via 3fb8aca)

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2.12.2...2.12.3