Good morning! Here's your coding interview problem for today. This problem was asked by Snapchat. Given a list of possibly overlapping intervals, return a new list of intervals where all overlapping intervals have been merged. The input list is not necessarily ordered in any way. For example, given `[(1, 3), (5, 8), (4, 10), (20, 25)]`, you should return `[(1, 3), (4, 10), (20, 25)]`.
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