Recommendation is to avoid using the year nomenclature as this
information is already encoded in the git repo. Avoids needing to
repeatly update.
Also updates AUTHORS.txt from current repo with contributor names
Fix assert ./src/generic/grid.cpp(5216): assert "idx >= 0 && idx < m_numRows" failed in GetRowPos(): invalid row index happening when selecting >= 3 row starting from the bottom last row. Even if not all row are selected.
This happen because wxGrid::DeleteRows will try to update the selected row between each call.
