修改内容：
- 支持输入毫秒，自动转换为秒进行计算
- 默认输出时区为东8区（Asia/Shanghai）
Alfred 2 workflow for converting between timestamps and formatted datetime strings with ease.
Simply type "df" followed by: "now", a UTC unix timestamp, or a formatted datetime string.
This will present you with the parsed date in various formats ready to copy to your clipboard.
