Add use and middleware (#50)

* Add use and middleware

* Add runtime checks to prevent wrong handling of constructor

Add use and middleware (#50)

* Add use and middleware

* Add runtime checks to prevent wrong handling of constructor

Merge pull request #42 from donutloop/feature/http_pretty_request_dump

add pretty print for http request

Merge pull request #41 from donutloop/feature/prettydumpresponse

Feature/prettydumpresponse

Merge pull request #39 from donutloop/feature/codegeneration

Feature/codegeneration

Merge pull request #37 from donutloop/feature/travis_update

updated travis configuration

Merge pull request #34 from donutloop/doc/issue_template

doc: added issue template for reporting a issue

Merge pull request #31 from donutloop/feat/lease

Leaser: Lease the resource for duration. When the lease expires, invo…

Merge pull request #30 from donutloop/feat/debugutil

Debugutil: Added pretty sprint func for any type

Merge pull request #28 from donutloop/opt/fifo

schedule: optimized spawning of goroutines