Update for pending RSCore String updates

Shared/ArticleStyles/ArticleStylesManager.swift

@@ -159,7 +159,7 @@ private func filenameWithStyleSuffixRemoved(_ filename: String) -> String {
 
 	for oneSuffix in styleSuffixes {
 		if filename.hasSuffix(oneSuffix) {
-			return (filename as NSString).rs_string(byStrippingSuffix: oneSuffix, caseSensitive: false)
+			return filename.stripping(suffix: oneSuffix)
 		}
 	}
 

Shared/Data/ArticleStringFormatter.swift

@@ -65,8 +65,8 @@ struct ArticleStringFormatter {
 		s = s.replacingOccurrences(of: "\r", with: "")
 		s = s.replacingOccurrences(of: "\t", with: "")
 		s = s.rsparser_stringByDecodingHTMLEntities()
-		s = s.rs_stringByTrimmingWhitespace()
-		s = s.rs_stringWithCollapsedWhitespace()
+		s = s.trimmingWhitespace
+		s = s.collapsingWhitespace
 
 		let maxLength = 1000
 		if s.count < maxLength {
@@ -89,9 +89,9 @@ struct ArticleStringFormatter {
 			return cachedBody
 		}
 		var s = body.rsparser_stringByDecodingHTMLEntities()
-		s = s.rs_string(byStrippingHTML: 250)
-		s = s.rs_stringByTrimmingWhitespace()
-		s = s.rs_stringWithCollapsedWhitespace()
+		s = s.strippingHTML(maxCharacters: 250)
+		s = s.trimmingWhitespace
+		s = s.collapsingWhitespace
 		if s == "Comments" { // Hacker News.
 			s = ""
 		}

Shared/Exporters/OPMLExporter.swift

@@ -14,7 +14,7 @@ struct OPMLExporter {
 
 	static func OPMLString(with account: Account, title: String) -> String {
 
-		let escapedTitle = title.rs_stringByEscapingSpecialXMLCharacters()
+		let escapedTitle = title.escapingSpecialXMLCharacters
 		let openingText =
 			"""
 			<?xml version="1.0" encoding="UTF-8"?>

Shared/Extensions/RSImage-Extensions.swift

@@ -6,7 +6,12 @@
 //  Copyright © 2019 Ranchero Software. All rights reserved.
 //
 
-import Foundation
+#if os(macOS)
+import AppKit
+#else
+import UIKit
+#endif
+
 import RSCore
 
 extension RSImage {

Shared/Favicons/FaviconDownloader.swift

@@ -114,7 +114,7 @@ final class FaviconDownloader {
 
 	func favicon(withHomePageURL homePageURL: String) -> IconImage? {
 
-		let url = homePageURL.rs_normalizedURL()
+		let url = homePageURL.normalizedURL
 
 		if let url = URL(string: homePageURL) {
 			if url.host == "nnw.ranchero.com" {

Shared/Favicons/SingleFaviconDownloader.swift

@@ -34,7 +34,7 @@ final class SingleFaviconDownloader {
 	private let queue: DispatchQueue
 
 	private var diskKey: String {
-		return (faviconURL as NSString).rs_md5Hash()
+		return faviconURL.md5HashString
 	}
 
 	init(faviconURL: String, homePageURL: String?, diskCache: BinaryDiskCache, queue: DispatchQueue) {

Shared/Images/ImageDownloader.swift

@@ -128,7 +128,7 @@ private extension ImageDownloader {
 
 	func diskKey(_ url: String) -> String {
 
-		return (url as NSString).rs_md5Hash()
+		return url.md5HashString
 	}
 
 	func postImageDidBecomeAvailableNotification(_ url: String) {