Proposed schedule for JavaFX 13

Here is the proposed schedule for JavaFX 13. RDP1: Jul 8, 2019 (aka “feature freeze”) RDP2: Aug 5, 2019 Freeze: Aug 26, 2019 GA: September 10, 2019 We plan to fork a 13-dev stabilization repo at RDP1. The GA date is one week ahead of JDK 13, matching what we did for 12. Please let Johan or me know if you have any questions. -- Kevin