First of paragraph of Classes and Structures

First of paragraph of Classes and Structures is finished.
finish bitwise not or and xor
Started Definition Syntax in Chapter 09
Merge branch 'develop' of https://github.com/xielingwang/the-swift-programming-language-in-chinese into develop
translate to bitwise shifting
translate to bitwise shifting
Starting Dot Syntax
Done at Memberwise Initializers for Structure Type

Starting Structures and Enumerations Are Value Types
Done *value type

Started “Classes Are Reference Types”
修改了部分语法和格式
粗略校对完毕: reference expression
Done Identity Operators

Started Pointers
reference - expression 增加格式当中
Update: Closures

增加锚点
Update: Closures

增加锚点
Update: Closures 修改Note格式
Update: Closures 统一代码引用格式
Update: Closures 增加分割线
添加了链接和锚点
Refine: Closure