User can timewizard multiple files in one commit

It is very common to want to add multiple files in a single commit.
Using the new timewizard_commit_tracked alias we can do just that! All
you need to do is stage all the files you want to timewizard into a
commit and use the special alias below.

Syntax:
timewizard_commit_tracked (day number) (month number) "Commit message (optional)"

Example:
timewizard_commit_tracked 02 10 "Initialize ArrayBag ADT and MagicSquare puzzle"
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