Would you accept a PR that adds a --min-prefix-length options?

When using wildcards command, it's harder to make sure the name are of the same size (for aesthetic reasons)

ei.

[babel] Successfully compiled 26 files with Babel.
[webpack] Compiled successfully.

Would become (using --min-prefix-length 7)

[babel  ] Successfully compiled 26 files with Babel.
[webpack] Compiled successfully.