No need for parentheses here

Persephone/MPDClient/Models/MPDAlbum.swift

@@ -16,9 +16,9 @@ extension MPDClient {
     var path: String?
 
     static func == (lhs: MPDAlbum, rhs: MPDAlbum) -> Bool {
-      return (lhs.title == rhs.title) &&
-        (lhs.artist == rhs.artist) &&
-        (lhs.date == rhs.date)
+      return lhs.title == rhs.title &&
+        lhs.artist == rhs.artist &&
+        lhs.date == rhs.date
     }
   }
 }

Persephone/Models/Album.swift

@@ -59,6 +59,6 @@ struct Album {
 
 extension Album: Equatable {
   static func == (lhs: Album, rhs: Album) -> Bool {
-    return (lhs.mpdAlbum == rhs.mpdAlbum)
+    return lhs.mpdAlbum == rhs.mpdAlbum
   }
 }

Persephone/Models/Artist.swift

@@ -19,6 +19,6 @@ struct Artist {
 
 extension Artist: Equatable {
   static func == (lhs: Artist, rhs: Artist) -> Bool {
-    return (lhs.name == rhs.name)
+    return lhs.name == rhs.name
   }
 }

Persephone/Models/MPDServer.swift

@@ -27,7 +27,7 @@ struct MPDServer {
 
 extension MPDServer: Equatable {
   static func == (lhs: MPDServer, rhs: MPDServer) -> Bool {
-    return (lhs.host == rhs.host) &&
-      (lhs.port == rhs.port)
+    return lhs.host == rhs.host &&
+      lhs.port == rhs.port
   }
 }