Something strange about the code in method load_ensemble

[xiaodineu]

I have checked the code and find something strange in file backend, method load_ensemble.
line 387, sort result seems like this in the picture

pick the last one seems not correct, Could you have a look at this?

[mfeurer]

Indeed, there's an error in the sorting. I just pushed a fix in PR #567. Please let me know if that fixes the issue for you.

[xiaodineu]

It works centainly.
But, is there any problems to fix this by sorting the ensembles by createtime like this?
in file backend, method load_ensemble, line387
indices_files.sort(key=lambda f: time.ctime(os.path.getmtime(f)))

[mfeurer]

They're both fine, this is just personal preference. I'll merge now.