shirne_dialog 1.6.0

A package to use alert, confirm, toast, imagePreview, snack and popup within one line code.

[1.6.0]

* 重构调用方法(兼容之前的写法，除了globalSetting变量名修改)
* 分动态调用和初始化后的静态调用两种使用方法
* 增加alert和confirm的按钮样式设置
* 增加标题直接设置Widget的参数

[1.5.1]

* fix

[1.5.0]

* 增加setting设置，为所有弹窗提供统一的参数配置

[1.4.1]

* popup默认背景色采用colorScheme.surface

[1.4.0]

* 返回值优化

[1.3.0]

* add imagePreview
* add color settings on progress widget

[1.2.2]

* add MyDialog.getAlignment for get Alignment from string
* add comments

[1.2.1]

* package & comments

[1.2.0]

* popup重构

[1.1.0]

* toast加入icon参数可选

[1.0.0]

* 修改alert和confirm返回一个future 导出ModalController类

[0.0.1]

* support basic usage: alert ,confirm, toast, snack, popup