Better support for CJK characters.

Previously, the Unicode range of the CJK chractaters only includes Chinese charactaters, Japanese Kanji, and CJK Symbols and Punctuation. The range are used by traditioanl Korean as well. This commit further includes Hiragana and Katakana in Japanese, and Hangul Syllables and Hangul Jamo in Korean to make CJK support more complete.

src/nanovg.c

@@ -2617,7 +2617,12 @@ int nvgTextBreakLines(NVGcontext* ctx, const char* string, const char* end, floa
 				type = NVG_NEWLINE;
 				break;
 			default:
-				if (iter.codepoint >= 0x4E00 && iter.codepoint <= 0x9FFF)
+				if (iter.codepoint >= 0x4E00 && iter.codepoint <= 0x9FFF ||
+					iter.codepoint >= 0x3000 && iter.codepoint <= 0x30FF ||
+					iter.codepoint >= 0xFF00 && iter.codepoint <= 0xFFEF ||
+					iter.codepoint >= 0x1100 && iter.codepoint <= 0x11FF ||
+					iter.codepoint >= 0x3130 && iter.codepoint <= 0x318F ||
+					iter.codepoint >= 0xAC00 && iter.codepoint <= 0xD7AF)
 					type = NVG_CJK_CHAR;
 				else
 					type = NVG_CHAR;