merge dev_5_0 -D org -I include -E exclude: PR 882 (Create bioformats_package.jar)
merge dev_5_0 -D org -I include -E exclude: PR 887 (Implement pre-loading for .sdt files in the interest of performance.)
merge dev_5_0 -D org -I include -E exclude: PR 888 (MATLAB toolbox: package and release fixes)