Koa 2.0 Branch

[Student007]

I will create a Koa 2.0 compatible branch next weeks... Edit: will take additional weeks of time :cry:

Any suggestions which features I should release with that new release ?

https://github.com/koajs/koa/issues/219#issuecomment-200733471

[Student007]

• [ ] https://github.com/koajs/koa/issues/367 review logging
• [ ] https://github.com/koajs/koa/tree/master/benchmarks
• [ ] create useful examples
• [ ] Increase Quality by adding useful core tests https://github.com/koajs/koa/tree/master/test