… into LinkedOrderPreservingMap. Details: 1. Boundary nodes are no longer kept in the underlying map. This improves + performance because only one update of the underlying map is needed to add a new entry. 2. The 'small map' implementations were moved into LinkedOrderPreservingMap to simplify things. The primary implementation can now assume a minimum size and doesn't have to deal with as many edge cases.
…oth namespace declarations and attributes