2.5.1

优化

• DatePicker：添加月、年高亮的样式（by @Debiancc in #14211）
• 更新 2.5.0 changelog （by @wacky6 in #14217）

修复

• 修复升级 Webpack 4 产生的问题，无法具名 import 组件，ELEMENT.locale() 调用报错。（by @island205 in #14220）
• 恢复 2.4.11 文档 (by @iamkun in #14222)

Optimization

• DatePicker: highlight current month and year (by @Debiancc in #14211)
• Update 2.5.0 changelog (by @wacky6 in #14217)

Bug fixes

• Fix export issue generate by webpack upgrading (by @island205 in #14220)
• Keep 2.4.11 docs && new sub folder for 2.5+ (by @iamkun in #14222)