v0.8.0-benchmark

This release is an update to v0.7.0-benchmark, using Ben's new ctypesgen interface (faster Bifrost speeds).

The code and benchmark logs in this release (logfile: test/benchmarks/performance_vs_serial/aws_bench2/aws_bench2_$X.log.txt where X in range(1, 64))
were used in the paper that was submitted to arxiv and JAI yesterday (which should be available as a public preprint by 8:00pm EDT; I will add it to this note).

The performance plots in the paper were produced using: https://github.com/MilesCranmer/bifrost_paper/blob/master/new_performance_figure.ipynb, specifically In[69] and In[70]:

Every measurement pixel is an average of 63 trials, and the errors show standard deviation.

The changes will be delineated in v0.8.0 (the Bifrost version also referenced in the paper).