Proposed schedule for JavaFX 12

[Kevin Rushforth]

Here is the proposed schedule for JavaFX 12.

RDP1: Jan 7, 2019 (aka “feature freeze”)
RDP2: Feb 4, 2019
Freeze: Feb 25, 2019
GA: March 12, 2019

We plan to fork a 12-dev stabilization repo some time between RDP1 and 
RDP2. The GA date is one week ahead of JDK 12, matching what we did for 11.

Please let Johan or I know if you have any questions.

-- Kevin