Fix #59 (np.int64 issue in the laTeX)

[Mxtt-smith]

Related issues

close #59

Proposed changes

Using a python list comprehension Instead of the NumPy arange method to create the list of xvalues from 1 to the number of supported platforms as this will produce a list of integers rather than np.int64 so when the values are added to the template the are plain integers and not np.int64(x).

Previous behaviour:

Behaviour now:

LaTeX now builds as it should:

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[swright87]

@Mxtt-smith Just to note that we should rebase rather than merge into branches to maintain linear history :)