Version 0.1.2

• Fix an uninitialized memory access detected by valgrind
• Detect overflow in maketexlstring() instead of silently continuing even if the string pool is full, leading to failures elsewhere.
• Drop recently add string field from glyph nodes as it was inefficient.
• Add get_glyph_string callback to be used instead of the removed string field.
• Revert fix for wrapping multi-bytes chars when printing logs, as there are other places that needs the same fix and it needs more considerations to fix properly.
• Sync with LuaTeX 1.10.1.