2.55.0

Summary: added the roster to tournament routes and the slug to the LoL champions.

Added

• Added the expected_roster to /tournament routes. This shows the teams and players that will participate in the given tournament.
• Added the slug to League of Legends champions. LoL champions are versioned, meaning that a champion can have multiple IDs. This addition provides unique identifiers for LoL champions across all game versions.
• Added a filter on the /lol/champions routes to filter by slug: ?filter[slug].

Fixed

• The last_games array in CS team stats endpoints.
• Response headers for the CS game rounds endpoint (/csgo/games/{game_id}/rounds).