[stzn/the-swift-programming-language-jp] Issue reopened: #479 in-out expressionの修正

[stzn/the-swift-programming-language-jp] Pull request opened: #492 fix typo

[stzn/the-swift-programming-language-jp] Pull request closed: #492 fix typo

[stzn/the-swift-programming-language-jp] Issue closed: #490 A typo exists in the Properties page

[stzn/the-swift-programming-language-jp] New comment on issue #490: A typo exists in the Properties page