run grandma diff report with a single glob

[catdad]

Right now, --logs takes one glob each for all the separate logs, treating each glob as a single report. This is useful, but not all too convenient.

Most tests I run only have one file per test, and so I would like to also have an option to provide a single glob and treat each file in the glob as a separate log to diff.

[catdad]

Actually, I implemented globing wrong apparently, so this is already how --logs works.

grandma diff -l out/pccis* out/dcs* out/sss*

Results in all files being treated separately in the diff (i.e. there are like 12 separate reports in the diff, rather than 3).

So really I need to implement the version that combines all files in each glob, similarly to how the text and json reporters work.

[catdad]

Never mind, the above comment it not really true.

In bash, globs are automatically expanded by bash itself before being passed into the command, and therefore, the above example worked in Linux. However, it does not work on Windows. See #127 for more info.

In short, this is something bash does and it is not really supported as a proper grandma feature. For those using bash, that's great... they can get both behaviors on a single command... provided they don't get confused. For others, like Windows users, this feature still needs to be implemented.