Lab4
====

Preamble
--------
Practice using the following git commands: init, clone, add, commit,
branch, checkout, log, tag and merge.  Use .gitignore to selectively
ignore files during a merge and, use gitk to visualize git tree structures
(the example discussed in class can be found in gitDemo).

Task
----
Your project manager has decided that your group will use git for all
future development. Your task is to develop git usage guidelines and
an example git repository for training your colleagues.  Your manager has
indicated that code changes should be developed as a separate branch and
later merged into the master for release. In addition, it is mandated
that testing infrastructure should not be included in a release.

Deliverables
------------
A git usage guideline for your group. You can assume that all colleagues
are familiar with the git commands listed in the preamble.

An example git repository based on the Stack module (your solution to
Lab3). Add the following method to show git usage when a code change
is required.

Instance Method inrange
-----------------------
Inputs: i 
Exceptions: none
Behaviour:  none
Outputs: 0 <= i <=  stack size

Note, stack.mis needs to be modified.