This minor release contains around 11 fixes. These include:
- Parse zero length periods from CSV format, #1670
- Add ZAR-SABOR, CNY-REPO-1W, use CHF-SARON in preference to CHF-TOIS, add more inactive indices, #1681, #1693, #1694
- Fix Ibor-OIS swap conventions, #1678
- Summarizer should handle short periods, #1663