merge develop -D org -I include -E exclude: PR 528 (Tile performance improvements for VMS and NDPI)
merge develop -D org -I include -E exclude: PR 834 (Permit cppwrap failure)
merge develop -D org -I include -E exclude: PR 847 (Fix the copyright statement on generated Javadocs (rebased onto develop))
merge develop -D org -I include -E exclude: PR 848 (xsd-fu: Further work for C++ metadata store generation)
merge develop -D org -I include -E exclude: PR 849 (travis: Remove python version requirement)