Matrix property fix

[Gustaf-C]

This fixes the incorrect highligting of matrices, shown below:

In essence it changes the validation to ignore a semicolon if it is enclosed in brackets.

As a small addition I added a print that tells you that all tests passed.

Closes #101

[dklilley]

Hi @Gustaf-C , thank you for finding and working to resolve this issue!

[dklilley]

Overall this change looks good for handling this case!

I believe there is also an issue with cell arrays in the same scenario:

classdef Foo
    properties
        cellArr = {1 1; 2 2};
    end
end

Could you make a quick addition to include this case as well?

[Gustaf-C]

That should have fixed the issue for cell arrays as well

[nothans]

Hi. Thanks for the contribution! Can you reach out to me, and I will get a CLA signed so we can accept this PR. Cheers.