libxo-0.8.0

• 6 bytes utf-8 values are historical; limit them to 4
• make xo_utf8_len_bits to avoid shifting to make it's values
• man pages: Short options first
• add "flags" parameter to encoder functions
• add E saved test case output
• add colors=xxx color mapping
• add comments to utf8 functions (xo_utf8_emit_char()
• add no-color argument to skip force of coloring
• Makefile: add targets for sanitize*
• add unit test case for {C:/}
• address static analysis issue
• man pages: fix ORs
• fix UTF-8 message
• fix option .man issues
• tests: force colors for testing
• init XOF_COLOR after parsing --libxo options
• add color-force flag
• docs: mangle the docs a bit
• allow LIBXO_OPTIONS to only set limited flags
• two fixes from -fsanitize=address: move buffer cleanup after last reference, and check max_fields before indirecting off pointer