Merge pull request #28 from 52North/develop

align with current development
Merge pull request #31 from 52North/develop

merge rc.1 status to master branch
[maven-release-plugin] prepare release timeseries-api-rc.1
[maven-release-plugin] rollback the release of timeseries-api-rc.1
[maven-release-plugin] prepare release timeseries-api-1.0.0-rc.1
[maven-release-plugin] rollback the release of timeseries-api-1.0.0-rc.1
[maven-release-plugin] prepare release timeseries-api-1.0.0-rc.1
Merge branch 'master' of github.com:52North/timeseries-api
Merge branch 'master' of github.com:ridoo/timeseries-api
increase version for next development cycle