diff --git a/Sources/Ignite/Actions/Action.swift b/Sources/Ignite/Actions/Action.swift
index 86a2a33..ab2ed5f 100644
--- a/Sources/Ignite/Actions/Action.swift
+++ b/Sources/Ignite/Actions/Action.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// One action that can be triggered on the page. Actions compile
 /// to JavaScript.
-public protocol Action {
+public protocol Action: Sendable {
     /// Convert this action into the equivalent JavaScript code.
     func compile() -> String
 }
diff --git a/Sources/Ignite/Actions/ShowModal.swift b/Sources/Ignite/Actions/ShowModal.swift
index d64f4cf..4fc9a55 100644
--- a/Sources/Ignite/Actions/ShowModal.swift
+++ b/Sources/Ignite/Actions/ShowModal.swift
@@ -8,10 +8,10 @@
 import Foundation
 
 /// Shows a modal dialog with the content of the page element identified by ID
-public struct ShowModal: Action {
+public struct ShowModal: Action, Sendable {
 
     /// The options used to configure the modal presentation
-    public enum Option {
+    public enum Option: Sendable {
         /// Shows the modal with a backdrop optionally dismissible by clicking on the backdrop.
         /// - Parameter dismissible: Whether the modal can be dismissed by clicking on the backdrop. Default is `true`.
         case backdrop(dismissible: Bool)
diff --git a/Sources/Ignite/Elements/Card.swift b/Sources/Ignite/Elements/Card.swift
index d2a82b3..2800606 100644
--- a/Sources/Ignite/Elements/Card.swift
+++ b/Sources/Ignite/Elements/Card.swift
@@ -22,8 +22,8 @@ public struct Card: BlockElement {
     }
 
     /// Where to position the content of the card relative to it image.
-    public enum ContentPosition: CaseIterable {
-        public static var allCases: [Card.ContentPosition] = [
+    public enum ContentPosition: CaseIterable, Sendable {
+        public static let allCases: [Card.ContentPosition] = [
             .bottom, .top, .overlay(alignment: .topLeading)
         ]
 
@@ -83,7 +83,7 @@ public struct Card: BlockElement {
         case end = "align-content-end"
     }
 
-    public enum ContentAlignment: CaseIterable {
+    public enum ContentAlignment: CaseIterable, Sendable {
         case topLeading
         case top
         case topTrailing
diff --git a/Sources/Ignite/Elements/MetaLink.swift b/Sources/Ignite/Elements/MetaLink.swift
index 721aabe..3cc5bba 100644
--- a/Sources/Ignite/Elements/MetaLink.swift
+++ b/Sources/Ignite/Elements/MetaLink.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// An item of metadata that links to an external resource somehow, such as
 /// a stylesheet.
-public struct MetaLink: HeadElement {
+public struct MetaLink: HeadElement, Sendable {
     /// The standard CSS you should include on all Ignite pages.
     public static let standardCSS = MetaLink(href: "/css/bootstrap.min.css", rel: "stylesheet")
 
diff --git a/Sources/Ignite/Elements/MetaTag.swift b/Sources/Ignite/Elements/MetaTag.swift
index faf72c1..f1e011f 100644
--- a/Sources/Ignite/Elements/MetaTag.swift
+++ b/Sources/Ignite/Elements/MetaTag.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// An item of metadata that helps browsers and search engines understand
 /// your page better.
-public struct MetaTag: HeadElement {
+public struct MetaTag: HeadElement, Sendable {
     /// Allows mobile browsers to scale this page appropriately for the device.
     public static let flexibleViewport = MetaTag(name: "viewport", content: "width=device-width, initial-scale=1")
 
diff --git a/Sources/Ignite/Framework/Event.swift b/Sources/Ignite/Framework/Event.swift
index 636bed2..84d2ce9 100644
--- a/Sources/Ignite/Framework/Event.swift
+++ b/Sources/Ignite/Framework/Event.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// One event that can trigger a series of actions, such as
 /// an onClick event hiding an element on the page.
-struct Event {
+struct Event: Sendable {
     var name: String
     var actions: [Action]
 }
diff --git a/Sources/Ignite/Framework/FeedConfiguration.swift b/Sources/Ignite/Framework/FeedConfiguration.swift
index 9398d2b..f41cf69 100644
--- a/Sources/Ignite/Framework/FeedConfiguration.swift
+++ b/Sources/Ignite/Framework/FeedConfiguration.swift
@@ -8,9 +8,9 @@
 import Foundation
 
 /// Configures feed generation for a site.
-public struct FeedConfiguration {
+public struct FeedConfiguration: Sendable {
     /// How much content should be provided in this feed.
-    public enum ContentMode {
+    public enum ContentMode: Sendable {
         /// Disable the feed entirely.
         case disabled
 
@@ -23,7 +23,7 @@ public struct FeedConfiguration {
 
     /// Configures an image to be used with your feed, to customize its
     /// appearance in feed readers.
-    public struct FeedImage {
+    public struct FeedImage: Sendable {
         /// The URL to your feed image.
         var url: String
 
diff --git a/Sources/Ignite/Framework/UnitPoint.swift b/Sources/Ignite/Framework/UnitPoint.swift
index c02f719..6f12623 100644
--- a/Sources/Ignite/Framework/UnitPoint.swift
+++ b/Sources/Ignite/Framework/UnitPoint.swift
@@ -8,7 +8,7 @@
 import Foundation
 
 // An x/y coordinate in the ranges 0 through 1.
-public struct UnitPoint {
+public struct UnitPoint: Sendable {
     var x: Double // swiftlint:disable:this identifier_name
     var y: Double // swiftlint:disable:this identifier_name
 
diff --git a/Sources/Ignite/Ignite.swift b/Sources/Ignite/Ignite.swift
index 1397c20..9d6d0ea 100644
--- a/Sources/Ignite/Ignite.swift
+++ b/Sources/Ignite/Ignite.swift
@@ -12,5 +12,5 @@ public struct Ignite {
     public static var bundle: Bundle { Bundle.module }
 
     /// The current version. Used to write generator information.
-    public static var version = "Ignite v0.1.0"
+    public static let version = "Ignite v0.2.1"
 }
diff --git a/Sources/Ignite/Modifiers/Cursor.swift b/Sources/Ignite/Modifiers/Cursor.swift
index 06024b2..40bfad7 100644
--- a/Sources/Ignite/Modifiers/Cursor.swift
+++ b/Sources/Ignite/Modifiers/Cursor.swift
@@ -10,10 +10,10 @@ import Foundation
 public enum Cursor: String {
     /// The cursor to display based on the current context. E.g., equivalent to text when hovering text.
     case auto
-    
+
     /// Default cursor. Typically an arrow.
     case `default`
-    
+
     /// No cursor is rendered.
     case pointer
 
diff --git a/Sources/Ignite/Modifiers/HoverEffect.swift b/Sources/Ignite/Modifiers/HoverEffect.swift
index eba9547..37e05f7 100644
--- a/Sources/Ignite/Modifiers/HoverEffect.swift
+++ b/Sources/Ignite/Modifiers/HoverEffect.swift
@@ -29,7 +29,7 @@ public struct EmptyHoverEffect: PageElement {
     public func render(context: PublishingContext) -> String {
         ""
     }
-    
+
     public var attributes = CoreAttributes()
 }
 
diff --git a/Sources/Ignite/Rendering/AttributeValue.swift b/Sources/Ignite/Rendering/AttributeValue.swift
index cbb5764..eb8c4a5 100644
--- a/Sources/Ignite/Rendering/AttributeValue.swift
+++ b/Sources/Ignite/Rendering/AttributeValue.swift
@@ -8,7 +8,7 @@
 import Foundation
 
 /// A simple key-value pair of strings that is able to store custom attributes.
-public struct AttributeValue {
+public struct AttributeValue: Sendable {
     /// The attribute's name, e.g. "target" or "rel".
     var name: String
 
diff --git a/Sources/Ignite/Styles/Color.swift b/Sources/Ignite/Styles/Color.swift
index 7936b08..1d34cc3 100644
--- a/Sources/Ignite/Styles/Color.swift
+++ b/Sources/Ignite/Styles/Color.swift
@@ -13,7 +13,7 @@ import Foundation
 /// Colors that can be used for backgrounds and foregrounds. Comes with all
 /// the standard HTML color names, can be created using RGB values as
 /// integer or doubles, can be created a grayscale, or using a hex string.
-public struct Color: CustomStringConvertible {
+public struct Color: CustomStringConvertible, Sendable {
     /// The CSS representation of this color.
     public var description: String {
         "rgb(\(red) \(green) \(blue) / \(opacity)%)"
diff --git a/Sources/Ignite/Styles/CoreAttributes.swift b/Sources/Ignite/Styles/CoreAttributes.swift
index 0563d92..0e09831 100644
--- a/Sources/Ignite/Styles/CoreAttributes.swift
+++ b/Sources/Ignite/Styles/CoreAttributes.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// A handful of attributes that all HTML types must support, either for
 /// rendering or for publishing purposes.
-public struct CoreAttributes {
+public struct CoreAttributes: Sendable {
     /// A unique identifier. Can be empty.
     var id = ""
 
diff --git a/Sources/Ignite/Styles/DiagonalEdge.swift b/Sources/Ignite/Styles/DiagonalEdge.swift
index 742d61a..7527e5b 100644
--- a/Sources/Ignite/Styles/DiagonalEdge.swift
+++ b/Sources/Ignite/Styles/DiagonalEdge.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// Describes diagonal edges on an element, e.g. top-leading, or bottom-trailing, along
 /// with groups of edges such as "top" (top leading *and* top-trailing).
-public struct DiagonalEdge: OptionSet {
+public struct DiagonalEdge: OptionSet, Sendable {
     /// The internal value used to represent this edge.
     public let rawValue: Int
 
diff --git a/Sources/Ignite/Styles/Edge.swift b/Sources/Ignite/Styles/Edge.swift
index 519fd78..817ee63 100644
--- a/Sources/Ignite/Styles/Edge.swift
+++ b/Sources/Ignite/Styles/Edge.swift
@@ -9,7 +9,7 @@ import Foundation
 
 /// Describes edges on an element, e.g. top or leading, along
 /// with groups of edges such as "horizontal" (leading *and* trailing).
-public struct Edge: OptionSet {
+public struct Edge: OptionSet, Sendable {
     /// The internal value used to represent this edge.
     public let rawValue: Int