bump deployment targets

Package.swift

@@ -5,7 +5,7 @@ import PackageDescription
 let package = Package(
     name: "SwiftCSV",
     platforms: [
-        .macOS("10.10"), .iOS("9.0"), .tvOS("9.2"), .watchOS("2.2")
+        .macOS("10.13"), .iOS("11.0"), .tvOS("11.0"), .watchOS("4.0")
     ],
     products: [
         .library(

SwiftCSV.podspec

@@ -9,12 +9,12 @@ Pod::Spec.new do |s|
     "Christian Tietze" => "[email protected]"
   }
   s.source       = { :git => "https://github.com/swiftcsv/SwiftCSV.git", :tag => s.version }
-  s.swift_versions = [ "5.6", "5.5", "5.4", "5.3", "5.2", "5.1", "5.0", "4.2" ]
+  s.swift_versions = [ "5.9", "5.8", "5.7", "5.6", "5.5", "5.4", "5.3", "5.2", "5.1", "5.0", "4.2" ]
 
-  s.ios.deployment_target = "9.0"
-  s.osx.deployment_target = "10.9"
-  s.tvos.deployment_target = "9.2"
-  s.watchos.deployment_target = "2.2"
+  s.ios.deployment_target = "11.0"
+  s.osx.deployment_target = "10.13"
+  s.tvos.deployment_target = "11.0"
+  s.watchos.deployment_target = "4.0"
 
   s.source_files = "SwiftCSV/**/*.swift"
   s.requires_arc = true