Ajb second branch#257

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AndrewBergstrom wants to merge 4 commits intospringframeworkguru:masterfrom

AndrewBergstrom:ajb-second-branch

Commits on Feb 26, 2023

Setting up Author and Book class, creating new entities, getters, setters, equals, hascodes, and using toString()
AndrewBergstrom
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author and book class set up'
AndrewBergstrom
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added Bootstrap dummy data
AndrewBergstrom
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Commits on Feb 28, 2023

Created publisher bootstrap data, publisherRepository as an interface, and a
AndrewBergstrom
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