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Update README.md : Array programming

Alternative messages let provide a symmetric implementation of binary operators (works for user classes and predefined classes)
Update README.md

In section Array Programming, the names of the internal classes were not correct : String | NumberString | Integer.
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Merge revisions 9515-9978 from SourceForge main/trunk
Remove oodialog.
Merge branch 'origin/merge_svn_main'
Merge branch 'origin/master'