diff --git a/.gitignore b/.gitignore
index 46c1604..d5c9e92 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,52 @@
 /Pods
 /Podfile.lock
 .DS_Store
+
+# Swift PM
+Package.resolved
+
+## User settings
+xcuserdata/
+
+## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
+*.xcscmblueprint
+*.xccheckout
+
+## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
+build/
+DerivedData/
+*.moved-aside
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+
+## Obj-C/Swift specific
+*.hmap
+
+## App packaging
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+#
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+# Package.resolved
+# *.xcodeproj
+#
+# Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
+# hence it is not needed unless you have added a package configuration file to your project
+.swiftpm
+
+.build/
diff --git a/.swiftpm/xcode/package.xcworkspace/xcuserdata/daniele.xcuserdatad/UserInterfaceState.xcuserstate b/.swiftpm/xcode/package.xcworkspace/xcuserdata/daniele.xcuserdatad/UserInterfaceState.xcuserstate
deleted file mode 100644
index 3eb199e..0000000
Binary files a/.swiftpm/xcode/package.xcworkspace/xcuserdata/daniele.xcuserdatad/UserInterfaceState.xcuserstate and /dev/null differ
diff --git a/Package.swift b/Package.swift
index 8cc39ee..68a5d99 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,5 +1,4 @@
 // swift-tools-version:5.3
-// The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
@@ -7,23 +6,15 @@ let package = Package(
     name: "ScrollStackController",
     platforms: [.iOS(.v11)],
     products: [
-        // Products define the executables and libraries produced by a package, and make them visible to other packages.
         .library(
             name: "ScrollStackController",
-            targets: ["ScrollStackController"]),
-    ],
-    dependencies: [
-        // Dependencies declare other packages that this package depends on.
-        // .package(url: /* package url */, from: "1.0.0"),
+            targets: ["ScrollStackController"]
+        ),
     ],
     targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
         .target(
             name: "ScrollStackController",
-            dependencies: []),
-        .testTarget(
-            name: "ScrollStackControllerTests",
-            dependencies: ["ScrollStackController"]),
+            dependencies: []
+        ),
     ]
 )
diff --git a/Sources/ScrollStackController/ScrollStack.swift b/Sources/ScrollStackController/ScrollStack.swift
index 98a92f5..992f3a3 100644
--- a/Sources/ScrollStackController/ScrollStack.swift
+++ b/Sources/ScrollStackController/ScrollStack.swift
@@ -253,6 +253,7 @@ open class ScrollStack: UIScrollView, UIScrollViewDelegate {
     /// Remove all existing rows and put in place the new list based upon passed views.
     ///
     /// - Parameter views: views to set.
+    @discardableResult
     open func setRows(views: [UIView]) -> [ScrollStackRow] {
         removeAllRows(animated: false)
         return addRows(views: views)
@@ -267,6 +268,7 @@ open class ScrollStack: UIScrollView, UIScrollViewDelegate {
     ///   - location: location inside the stack of the new row.
     ///   - animated: `true` to animate operation, by default is `false`.
     ///   - completion: completion: optional completion callback to call at the end of insertion.
+    @discardableResult
     open func addRow(view: UIView, at location: InsertLocation = .bottom, animated: Bool = false, completion: (() -> Void)? = nil) -> ScrollStackRow? {
         guard let index = indexForLocation(location) else {
             return nil
@@ -280,6 +282,7 @@ open class ScrollStack: UIScrollView, UIScrollViewDelegate {
     /// - Parameter controllers: controllers to add as rows.
     /// - Parameter location: location inside the stack of the new row.
     /// - Parameter animated: `true` to animate operatio, by default is `false`.
+    @discardableResult
     open func addRows(views: [UIView], at location: InsertLocation = .bottom, animated: Bool = false) -> [ScrollStackRow] {
         enumerateItems(views, insertAt: location) {
             addRow(view: $0, at: location, animated: animated)