Updates for August 22

[bfhealy]

Pull requests

• Increase cronjob checkpoint refresh to 180 days #468
• Add selected feature definition tables to usage.md #469
• Add method to find and copy classifier stats to new directory #470
• Update classification lists in scanner guide #471
• Update plotting notebook to use assemble_training_stats output #472
• Plot DNN architecture during training #473

Going forward

We will work on:

• Filling out more parts of the SCoPe paper