Memory concerns: "Program ended with exit code: 0" about githubcontributionsios HOT 4 CLOSED

Adding on to this, it looks like didReceiveMemoryWarning regularly gets called in TodayViewController.m, which is likely contributing to the problem.

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Can you provide more information like what device are you using, and what version of iOS 10? This widget runs well on my iPhone 5S / 6S with 7MB memory usage, but I did hear people saying it takes too much memory and crashes, so I wonder if this is a problem that differs on different device / OS version. Maybe some version of iOS 10 has a more strict memory policy on today extension, or some version of iOS 10 will take more memory when using SceneKit, I just don't have enough information to know which is true.

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@KevinGAleman

UIView CALayer storage is twice the size on the 7 Plus by default, so every button took twice the memory, and blew past widget memory limit.

Ref: https://twitter.com/jamesthomson/status/777284708254244864

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@JustinFincher @Cee I am using an iPhone 7 Plus running iOS 10.1.1. Cee is correct, and I've verified that the PR does seem to address this issue with no crash, though I still get a memory warning.

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