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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I think this is not a good practice because the strings.Title() function is deprecated and does not have a future. There are other ways of achieving this, such as using Unicode to avoid reliance on deprecated functions. Just a point of view.