silence some retroactive conformance warnings where they are acceptable risks

Author: mattpolzin

Sources/JSONAPITesting/Attribute+Literal.swift

@@ -39,7 +39,7 @@ extension Attribute: ExpressibleByFloatLiteral where RawValue: ExpressibleByFloa
     }
 }
 
-extension Optional: ExpressibleByFloatLiteral where Wrapped: ExpressibleByFloatLiteral {
+extension Optional: @retroactive ExpressibleByFloatLiteral where Wrapped: ExpressibleByFloatLiteral {
     public typealias FloatLiteralType = Wrapped.FloatLiteralType
 
     public init(floatLiteral value: FloatLiteralType) {
@@ -55,7 +55,7 @@ extension Attribute: ExpressibleByBooleanLiteral where RawValue: ExpressibleByBo
     }
 }
 
-extension Optional: ExpressibleByBooleanLiteral where Wrapped: ExpressibleByBooleanLiteral {
+extension Optional: @retroactive ExpressibleByBooleanLiteral where Wrapped: ExpressibleByBooleanLiteral {
     public typealias BooleanLiteralType = Wrapped.BooleanLiteralType
 
     public init(booleanLiteral value: BooleanLiteralType) {
@@ -71,7 +71,7 @@ extension Attribute: ExpressibleByIntegerLiteral where RawValue: ExpressibleByIn
     }
 }
 
-extension Optional: ExpressibleByIntegerLiteral where Wrapped: ExpressibleByIntegerLiteral {
+extension Optional: @retroactive ExpressibleByIntegerLiteral where Wrapped: ExpressibleByIntegerLiteral {
     public typealias IntegerLiteralType = Wrapped.IntegerLiteralType
 
     public init(integerLiteral value: IntegerLiteralType) {

Sources/JSONAPITesting/Optional+Literal.swift

@@ -5,23 +5,23 @@
 //  Created by Mathew Polzin on 11/29/18.
 //
 
-extension Optional: ExpressibleByUnicodeScalarLiteral where Wrapped: ExpressibleByUnicodeScalarLiteral {
+extension Optional: @retroactive ExpressibleByUnicodeScalarLiteral where Wrapped: ExpressibleByUnicodeScalarLiteral {
     public typealias UnicodeScalarLiteralType =  Wrapped.UnicodeScalarLiteralType
 
     public init(unicodeScalarLiteral value: UnicodeScalarLiteralType) {
         self = .some(Wrapped(unicodeScalarLiteral: value))
     }
 }
 
-extension Optional: ExpressibleByExtendedGraphemeClusterLiteral where Wrapped: ExpressibleByExtendedGraphemeClusterLiteral {
+extension Optional: @retroactive ExpressibleByExtendedGraphemeClusterLiteral where Wrapped: ExpressibleByExtendedGraphemeClusterLiteral {
     public typealias ExtendedGraphemeClusterLiteralType =  Wrapped.ExtendedGraphemeClusterLiteralType
 
     public init(extendedGraphemeClusterLiteral value: ExtendedGraphemeClusterLiteralType) {
         self = .some(Wrapped(extendedGraphemeClusterLiteral: value))
     }
 }
 
-extension Optional: ExpressibleByStringLiteral where Wrapped: ExpressibleByStringLiteral {
+extension Optional: @retroactive ExpressibleByStringLiteral where Wrapped: ExpressibleByStringLiteral {
     public typealias StringLiteralType = Wrapped.StringLiteralType
 
     public init(stringLiteral value: StringLiteralType) {