Merge pull request #40 from jdblischak/7.8-re-run

Note that the re-run triggers changed in Snakemake 7.8.0

_episodes/08-configuring.md

@@ -81,13 +81,16 @@ rule more readable.
 > >
 > > * You can choose a different parameter name, but it must be a valid identifier - no spaces or
 > >   hyphens.
-> > * Changing the parameters doesn't automatically trigger Snakemake to re-run the rule (remember
-> >   it only looks at file modification times) so you need to use `-f` (or `-R` or `-F`) to
-> >   force the job to be re-run.
+> > * Changing the parameters doesn't automatically trigger Snakemake to re-run the rule so you need to use
+> >   `-f` (or `-R` or `-F`) to force the job to be re-run (note: as mentioned in
+> >   [episode 4]({{ page.root }}{% link _episodes/04-the_dag.md %}#another-note-on--r)
+> >   this behaviour is changed in recent Snakemake versions).
 > >
 > {: .solution}
 {: .challenge}
 
+[snakemake-7.8.0]: https://github.com/snakemake/snakemake/blob/main/CHANGELOG.md#780-2022-05-24
+
 ## Making Snakefiles configurable
 
 In general, it's good practise to break out parameters that you intend to change into a separate