Use PropList-3.1.1 for Unicode 3.1.1

Unicode 3.1.1 published an updated PropList-3.1.1.txt, but the resources
reused PropList-3.1.0.txt. The update removes the mathematical digits
1D7CE..1D7FF from Hex_Digit and adds ASCII_Hex_Digit, so Unicode 3.1.1
had the wrong Hex_Digit set and no ASCII_Hex_Digit.

Assisted-By: Claude Opus 5.5
Issue: #110

Author: JLHwung

data/3.1.1-properties.txt

@@ -1,8 +1,8 @@
-# PropList-3.1.0.txt
+# PropList-3.1.1.txt
 #
 # Unicode Character Database: Extended Properties
 # For documentation, see PropList.html
-# Date: 2001-03-02 00:06:33.9 GMT [MD]
+# Date: 2001-07-12 14:15:00.0 PDT [KW]
 # Note: Unassigned and Noncharacter codepoints are omitted,
 #       except when listing Noncharacter or Cn.
 # ================================================
@@ -243,9 +243,16 @@ FF5D          ; Other_Math # Pe       FULLWIDTH RIGHT CURLY BRACKET
 FF10..FF19    ; Hex_Digit # Nd  [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE
 FF21..FF26    ; Hex_Digit # L&   [6] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER F
 FF41..FF46    ; Hex_Digit # L&   [6] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER F
-1D7CE..1D7FF  ; Hex_Digit # Nd  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
 
-# Total code points: 94
+# Total code points: 44
+
+# ================================================
+
+0030..0039    ; ASCII_Hex_Digit # Nd  [10] DIGIT ZERO..DIGIT NINE
+0041..0046    ; ASCII_Hex_Digit # L&   [6] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER F
+0061..0066    ; ASCII_Hex_Digit # L&   [6] LATIN SMALL LETTER A..LATIN SMALL LETTER F
+
+# Total code points: 22
 
 # ================================================
 

data/resources.mjs

@@ -84,7 +84,7 @@ const resources = [
 		main: 'https://unicode.org/Public/3.1-Update/UnicodeData-3.1.0.txt',
 		scripts: 'https://unicode.org/Public/3.1-Update/Scripts-3.1.0.txt',
 		blocks: 'https://unicode.org/Public/3.1-Update/Blocks-4.txt',
-		properties: 'https://unicode.org/Public/3.1-Update/PropList-3.1.0.txt',
+		properties: 'https://unicode.org/Public/3.1-Update1/PropList-3.1.1.txt',
 		'derived-core-properties':
 			'https://unicode.org/Public/3.1-Update/DerivedCoreProperties-3.1.0.txt',
 		'derived-general-category':

tests/parsers.mjs

@@ -387,6 +387,20 @@ test('Historical Script values use canonical names', async (t) => {
 	}
 });
 
+test('Unicode 3.1.1 uses its corrected property list', async (t) => {
+	const v310 = await parseProperties('3.1.0');
+	const v311 = await parseProperties('3.1.1');
+	t.assert.ok(v310.Hex_Digit.contains(0x1d7ce));
+	t.assert.equal(v310.ASCII_Hex_Digit, undefined);
+	t.assert.ok(!v311.Hex_Digit.contains(0x1d7ce));
+	t.assert.ok(!v311.Hex_Digit.contains(0x1d7ff));
+	t.assert.ok(v311.Hex_Digit.contains(0xff21));
+	t.assert.deepEqual(
+		v311.ASCII_Hex_Digit.toArray(),
+		[...'0123456789ABCDEFabcdef'].map((c) => c.codePointAt(0)),
+	);
+});
+
 test('Legacy property ranges preserve six-digit code points', async (t) => {
 	const properties = await parseProperties('3.0.1');
 	t.assert.ok(properties.Private_Use.contains(0x100000));