Keeping up with Snakemake changes

[tbooth]

From @jdblischak

Snakemake 7.8 introduced a few big changes. Your tutorial is based on version 5.32.2. You have a box in the episode "How Snakemake plans what jobs to run" that notes these changes in behavior. However, given that Snakemake 7.8 was released in May 2022, at some point it will make more sense for the episode to describe the 7.8+ behavior, and then only mention the <7.8 behavior in a box.

Another cool Snakemake feature that I really like is the ability to freeze the conda environments used in each rule. This would be worth mentioning in the lesson on conda integration