Verbose output during run

[chateauferret]

Seemingly for complex guides or large images the application can take some minutes to complete. It would be helpful to have a verbose option to see that it is still working, and has not crashed; and also to estimate how long it might take to complete, so that I can decide how elaborate a snack to prepare whilst I am waiting!

[morvenshen]

似乎对于复杂的指南或大图像，应用程序可能需要几分钟才能完成。有一个详细的选项可以帮助您查看它是否仍在工作并且没有崩溃；并估计完成可能需要多长时间，这样我就可以决定在等待时准备多精致的小吃！

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