Merge branch 'master' into develop

* master:
  Ignore xcuserdata
  Delete .swift-version
  s.swift_versions = ['4.0', '4.2', '5.0', '5.1']
  bump version 2.2.2
  Fix hang on Xcode 11

.gitignore

@@ -1,2 +1,5 @@
 # OS X
 .DS_Store
+
+# Xcode user settings
+xcuserdata/

.swift-version

@@ -1 +0,0 @@
-4.2

Sources/StructuralEvaluator.swift

@@ -78,10 +78,8 @@ public class StructuralEvaluator: Evaluator {
             var parent = element.parent()
             while (true) {
                 do {
-                    if parent != nil {
-                        if (try evaluator.matches(root, parent!)) {
-                            return true
-                        }
+                    if let p = parent, try evaluator.matches(root, p) {
+                        return true
                     }
                 } catch {}
 

SwiftSoup.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'SwiftSoup'
-  s.version          = '2.2.1'
+  s.version          = '2.2.2'
   s.summary          = 'Swift HTML Parser / Reader, XML , with best of DOM, CSS, and jquery'
   s.description      = <<-DESC
 SwiftSoup is a Swift library for working with real-world HTML. It provides a very convenient API for extracting and manipulating data, using the best of DOM, CSS, and jquery-like methods.
@@ -26,6 +26,7 @@ SwiftSoup is a Swift library for working with real-world HTML. It provides a ver
   s.tvos.deployment_target = "9.0"
 
   s.source_files = 'Sources/**/*.swift'
+  s.swift_versions = ['4.0', '4.2', '5.0', '5.1']
 
   #s.resource_bundles = {
   #  'SwiftSoup' => ['Assets/*.properties']