Keeping our preview in line with master.
Changes:
- f8d561a housekeeping: Updating to 9.8.15 release (#1922)
- 61c1489 housekeeping: Update to the latest master. (#1907)
- b409ec8 feature: add dot net core 3.0 wpf/winforms support (#1903) [ #1904 ]
This list of changes was auto generated.