- custom properties (h/t @hmalphettes) - new option bookProps - added minified target (using uglify-js)
- updated ssf to 0.5.4 - cleaned up CSV string output - added CSV tests (from test_files) - passes lint - inlineStr actually parses <is> block - more XLSB bits
subfiles reshuffled (XLSB and XLSX/XLSM content separated)