Update some code comments

pack.js

@@ -268,9 +268,6 @@ class Packr extends Unpackr {
 					}
 					target[position++] = 0xcb
 					targetView.setFloat64(position, value)
-					/*if (!target[position[4] && !target[position[5] && !target[position[6] && !target[position[7] && !(target[0] & 0x78) < ) {
-						// something like this can be represented as a float with binary rounding
-					}*/
 					position += 8
 				}
 			} else if (type === 'object') {
@@ -389,6 +386,7 @@ class Packr extends Unpackr {
 		}
 
 		const writeObject = this.useRecords === false ? this.variableMapSize ? (object) => {
+			// this method is slightly slower, but generates "preferred serialization" (optimally small for smaller objects)
 			let keys = Object.keys(object)
 			let length = keys.length
 			if (length < 0x10) {
@@ -409,7 +407,7 @@ class Packr extends Unpackr {
 			}
 		} :
 		(object, safePrototype) => {
-			target[position++] = 0xde // always use map 16, so we can preallocate and set the length afterwards
+			target[position++] = 0xde // always using map 16, so we can preallocate and set the length afterwards
 			let objectOffset = position - start
 			position += 2
 			let size = 0

unpack.js

@@ -424,24 +424,7 @@ function readStringJS(length) {
 
 	return result
 }
-/*function readShortString(length) {
-	let start = position
-	let end = start + length
-	while (position < end) {
-		const byte = src[position++];
-		if ((byte & 0x80) > 0) {
-			position = end
-			console.log('utf8 slice')
-			return src.utf8Slice(start, end)
-		}
-	}
-	if (srcStringEnd < end) {
-		srcStringStart = start
-		srcStringEnd = start + 8192
-		srcString = src.toString('latin1', start, srcStringEnd)
-	}
-	return srcString.slice(start - srcStringStart, end - srcStringStart)
-}*/
+
 function readArray(length) {
 	let array = new Array(length)
 	for (let i = 0; i < length; i++) {