Resolve SwiftLint Warnings (Jounce#167)

* Disable implicit_return rule

* Unescape slashes in file header pattern

Decrease indentation level for file header pattern

* Fix 'warning: Contains over first not nil Violation: Prefer `contains` over `first(where:) != nil` (contains_over_first_not_nil)'

* Fix 'warning: Mark Violation: MARK comment should be in valid format. e.g. '// MARK: ...' or '// MARK: - ...' (mark)'

.swiftlint.yml

@@ -5,7 +5,8 @@ disabled_rules:
   - trailing_comma
   - redundant_discardable_let
   - void_return
-
+  - implicit_return
+
 opt_in_rules:
   - array_init
   - attributes
@@ -45,22 +46,22 @@ opt_in_rules:
 
 file_header:
   required_pattern: |
-                    \/\/ Copyright © .*
-                    \/\/
-                    \/\/ Permission is hereby granted, free of charge, to any person obtaining a copy
-                    \/\/ of this software and associated documentation files \(the "Software"\), to deal
-                    \/\/ in the Software without restriction, including without limitation the rights
-                    \/\/ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-                    \/\/ copies of the Software, and to permit persons to whom the Software is
-                    \/\/ furnished to do so, subject to the following conditions:
-                    \/\/
-                    \/\/ The above copyright notice and this permission notice shall be included in
-                    \/\/ all copies or substantial portions of the Software\.
-                    \/\/
-                    \/\/ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-                    \/\/ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-                    \/\/ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-                    \/\/ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-                    \/\/ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-                    \/\/ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-                    \/\/ THE SOFTWARE\.
+    // Copyright © .*
+    //
+    // Permission is hereby granted, free of charge, to any person obtaining a copy
+    // of this software and associated documentation files \(the "Software"\), to deal
+    // in the Software without restriction, including without limitation the rights
+    // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    // copies of the Software, and to permit persons to whom the Software is
+    // furnished to do so, subject to the following conditions:
+    //
+    // The above copyright notice and this permission notice shall be included in
+    // all copies or substantial portions of the Software\.
+    //
+    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    // THE SOFTWARE\.

Tests/SurgeTests/MatrixTests.swift

@@ -1037,6 +1037,7 @@ class MatrixTests: XCTestCase {
         guard a.count == b.count else {
             return false
         }
+
         return !zip(a, b).contains { a, e -> Bool in
             !(abs(a.0 - e.0) < accuracy && abs(a.1 - e.1) < accuracy)
         }