merge develop -D org: PR 528 (Tile performance improvements for VMS and NDPI)
merge develop -D org: PR 857 (Initial support for Zeiss .lms files)
merge develop -D org: PR 858 (Initial support for Veeco AFM data)
merge develop -D org: PR 859 (Assorted metadata/tile parsing fixes)
merge develop -D org: PR 945 (cpp: bioformats: Add MetadataMap class for original metadata)
merge develop -D org: PR 949 (C++ fixes to work around clang++/libc++ bugs)
merge develop -D org: PR 950 (Cellomics: a few fixes for single-file datasets)
merge develop -D org: PR 954 (Fix ImageScope links to match the committed documentation (rebased onto develop))