Emacs release schedule and Akihito's abdication

[Paul Eggert]

Should we plan for a new release around March 2019, if only a point release? 
Otherwise, a lot of Japanese text will stop working, due to the expected 
abdication of Emperor Akihito in April 2019, and the use of a new character in 
Japanese-format dates. This differs from ordinary Unicode updates, since the new 
character is likely to be quite common pretty quickly, at least in Japanese 
text. The new character will not be announced until late February 2019, 
unfortunately. See:

Whistler K. Unicode 12.1 Planning Considerations. 2018-07-16. 
https://www.unicode.org/L2/L2018/18220-u121planning.txt

Hern A. Big tech warns of 'Japan's millennium bug' ahead of Akihito's 
abdication. The Guardian. 2018-07-25. 
https://www.theguardian.com/technology/2018/jul/25/big-tech-warns-japan-millennium-bug-y2k-emperor-akihito-abdication