Fixed-lag smoothing crashes with QMC about particles HOT 3 CLOSED

I circumvented this with a hacky if self.hist and isinstance(self.hist, smoothing.ParticleHistory). I am not sure about the ramifications of this, but it allowed me to test fixed-lag smoothing.
Aside from this, it appears to be working fine. The performance appears to be similar to the fixed-lag smoothing method I had implemented before.

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thanks for spotting this!
Now h-orders (order of the particles along the Hilbert curve) are saved only for full histories, which makes more sense. Also I took this opportunity to streamline the code a little bit.

Are you already using the new collector for fixed-lag smoothing (option fixed-lag-smooth)?

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I only started testing the fixed-lag smoothing yesterday, so yes, I'm using the collector.

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