v1.0.2: Merge pull request #3 from khaeru/feature/multiple-writers

Support multiple writers

v1.0.1: Test data endpoints in test_sources.py (#2)

- Support test of data endpoints in test_sources.py
- Add test of OECD data query
- Accept a dsd= argument to sdmxjson.Reader.read_message()
- Correct signature of TestINEGI.test_endpoints
- Update what's new

v1.0.0

Update doc/whatsnew.rst for v1.0.0