开发环境： IntelliJ IDEA、Atom、Navicat for MySQL 使用技术：
2017-07-07：修改管理员后台端，添加获取用户数据的json接口；将用户信息导入到Excel中。
2017-06-25：项目答辩，完成课程设计任务。
2017-06-05：前端界面架构基本完成；取消数据库中外键，改为java代码实现逻辑关系。
2017-05-29：开发环境搭建完成，三个将功能模块进行了分工。
2017-05-23：需求二次改进，交易使用线下交易；数据库的设计。
2017-05-18：项目定题，取名为“Squirrel”，讨论项目的基本需求以及功能模块。
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.
