btcturk.fetchOHLCV user can pass custom timeframes, fixes: https://github.com/ccxt/ccxt/pull/15135#discussion_r983251345
btcturk.fetchOHLCV user can pass custom timeframes, fixes: https://github.com/ccxt/ccxt/pull/15135#discussion_r983251345

ccxt/ccxt,ccxt/ccxt,ccxt/ccxt,ccxt/ccxt,ccxt/ccxt