Yifeng Wang

XML dependencies are not provided in [JSFiddle demo](https://jsfiddle.net/oqpar65u/2/).

#### Do you want to request a *feature* or report a *bug*? Feature For tree shaking it'll be better bundle Bumpover with `package.module`. https://github.com/rollup/rollup/wiki/pkg.module

Extensible rule getter

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#### Do you want to request a *feature* or report a *bug*? Feature We have a well defined rule runner for now, whereas for a large doc shape, writing rules...

Bumpover is designed to migrate data at first. For such tasks, writing unit tests is critical to ensure reliablity. Since `bumper.bump` is async, it may be confusing testing it. A...

暂定如下结构： * 对象与消息 * 类与继承 * 对象生命周期 * 集合类 * 常量 * 回调 * 协议与代理 * 类别 * 块

Just pick an easy tool like Babel or Rollup can be enough.

纸质版修订由出版社编辑在 InDesign 文件上完成，无法直接同步回 markdown 版本。这个 PR 会陆续将这些改动手动同步到在线版，但不保证逐字逐句 100% 的一致。