Merge branch 'release/1.0.0' into develop

* release/1.0.0:
  Add CHANGELOG to document to versions
Additional error handling check
Merge branch 'hotfix/1.0.1' into develop

* hotfix/1.0.1:
  Version bump to 1.0.1
Add authentication via parameter "apikey"

When using the API via a website that is protected with HTTP BASIC auth
in Apache or Nginx, we were running into issues. In those scenarios we
can now pass the key as a parameter.
Version bump to 1.1.0
Merge branch 'release/1.1.0'

* release/1.1.0:
  Version bump to 1.1.0
  Add authentication via parameter "apikey"
  Additional error handling check