* removed "OPTIONAL_LINE_BREAK" from sheet1.xml in libxlsxio_write * fixed error when opening generated .xlsx files with Gnumeric (added row and cell coordinate references in sheet1.xml and cellStyleXfs in styles.xml)
* fixed hang on Windows when building release version with MinGW-64 (fixed by using stricmp instead of strcasecmp) * added CMake option WITH_WIDE to build UTF-16 library (libxlsxio_readw) - experimental, only tested on Windows