mp-flutter 0.3.0 — pub.dev: flutter_miniprogram

Breaking:主包改名为 flutter_miniprogram

• packages/mp_flutter 发布到 pub.dev 的包名由 mp_flutter 改为
  flutter_miniprogram(mp_flutter 这个名字在 pub.dev 上已被另一个包
  占用)。仓库/项目名、仓库里的目录名(packages/mp_flutter)、配置文件名
  (mp_flutter.yaml)都不受影响,仍是旧名字——只有 pubspec.yaml 的
  name、dev_dependencies 里引入它用的 key、package: import 前缀、
  以及 dart run 后面跟的可执行文件名变了:
  • dev_dependencies: { mp_flutter: ... } → dev_dependencies: { flutter_miniprogram: ... }
  • dart run mp_flutter → dart run flutter_miniprogram
  • import 'package:mp_flutter/...' → import 'package:flutter_miniprogram/...'
  • mp_flutter_wechat、mp_flutter_native 两个包名不变
• 三个包(flutter_miniprogram、mp_flutter_wechat、mp_flutter_native)
  同步升到 0.3.0,补齐 pub.dev 发布所需的 homepage/repository/
  issue_tracker/topics/LICENSE/CHANGELOG.md,去掉 publish_to: none。