Minor style changes

Author: stevapple

Sources/TSCBasic/Path.swift

@@ -76,6 +76,7 @@ public protocol Path: Hashable, Codable, CustomStringConvertible {
     var components: [String] { get }
 }
 
+/// Default implementations of some protocol stubs.
 extension Path {
     public var pathString: String {
         if filepath.string.isEmpty {
@@ -145,7 +146,10 @@ extension Path {
         }
         return components
     }
+}
 
+/// Default implementation of `CustomStringConvertible`.
+extension Path {
     public var description: String {
         return pathString
     }
@@ -156,6 +160,7 @@ extension Path {
     }
 }
 
+/// Default implementation of `Codable`.
 extension Path {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.singleValueContainer()