Merge pull request #42 from GarethIW/garethiw-develop

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Merge pull request #43 from GarethIW/gredgie-develop

Gredgie develop
Update README.md
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Merge pull request #45 from GarethIW/garethiw-develop

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Executable updated
Various bug fixes, levelling
Merge pull request #46 from GarethIW/gredgie-develop

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Merge pull request #47 from GarethIW/develop

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