Purple gems

Hello, language learners 😀! Just a quick update. We thought that using yellow gems showing number of finished lessons overall and number of finished lessons this week were a bit confusing, especially for new learners. So we have just introduced a new, purple gem. This signifies lessons finished this week, and it is used to create leaderboards. The yellow gem remains the same, this is the number of completed lessons overall. Please let me know if you like this change. Also, please feel free to write if you have any other ideas how we can improve Repeto.