Add scroll escapes (#20)

Fixes #19

Author: Qix-

fixtures/ansi-codes.js

@@ -10,6 +10,8 @@ exports.vt52Codes = new Map([
 	['I', ['Reverse line feed']],
 	['J', ['Erase to end of screen']],
 	['K', ['Erase to end of line']],
+	['S', ['Scroll up']],
+	['T', ['Scroll down']],
 	['Z', ['Identify']],
 	['=', ['Enter alternate keypad mode']],
 	['>', ['Exit alternate keypad mode']],

index.js

@@ -3,7 +3,7 @@
 module.exports = () => {
 	const pattern = [
 		'[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[a-zA-Z\\d]*)*)?\\u0007)',
-		'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PRZcf-ntqry=><~]))'
+		'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-ntqry=><~]))'
 	].join('|');
 
 	return new RegExp(pattern, 'g');