Changed old name to new name
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These will be the main files for the shell.
Updated commit.

Didn't keep track of changes very well. Since Windows command line doesn't work with
'git diff' I will just be brief.

Worked on key handlers, mostly.

I also added a new struct called Terminal_Output, which will be used
to store formatted text. As a result of this, there are now two vectors
in the Terminal struct - one for input and one for output.
Renamed to shell.c