housekeeping

src/tp04/YearGroup.java

src/tp05/Book.java

src/tp05/ComicBook.java

src/tp05/Library.java

src/tp05/LibraryTest.java

src/tp05/ShopTest.java

src/tp05/Test.java

src/tp05/UseLibrary.java

src/tp09/DicoJava.java

src/tp09/HierarchyCreation.java

tp06