COPDS-3121: Adapt integration-tests to deal with multiple download no…

…des (#39)

Copds 3055 (#35)

* preserve original request

* fix test

* add test

* test date caching

* move test

Update README.md (#34)

invalidate url cache in integration test (#28)

template update (#24)

Add client.delete method (#18)

add checkout (#17)

Fix release badge (#4)