Cleaned up / removed old MQTT client.

Sources/Models/Relay.swift

@@ -1,40 +0,0 @@
-
-/// Represents a relay that can be controlled by the MQTT Broker.
-public struct Relay {
-  
-  /// The topic for the relay.
-  public var topic: String
-  
-  /// Create a new relay at the given topic.
-  ///
-  /// - Parameters:
-  ///   - topic: The topic for commanding the relay.
-  public init(topic: String) {
-    self.topic = topic
-  }
-}
-
-public enum Relay2 {
-  
-  /// The topic to read the current state of the relay from.
-  case read(topic: String)
-  
-  /// The topic to command the relay state.
-  case command(topic: String)
-}
-
-extension Relay {
-  
-  /// Represents the different commands that can be sent to a relay.
-  public enum State: String {
-    
-    /// Toggle the relay state on or off based on it's current state.
-    case toggle
-    
-    /// Turn the relay off.
-    case off
-    
-    /// Turn the relay on.
-    case on
-  }
-}

Sources/Models/Sensor.swift

@@ -1,15 +0,0 @@
-
-/// Represents a sensor that provides a reading.
-public struct Sensor<Reading>: Equatable {
-  
-  /// The topic to retrieve the reading from.
-  public var topic: String
-  
-  /// Create a new sensor for the given topic.
-  ///
-  /// - Parameters:
-  ///   - topic: The topic to retrieve the readings from.
-  public init(topic: String) {
-    self.topic = topic
-  }
-}