Dogelog Player goes Multi-Threading (Was: ANN: Dogelog Player 1.3.3 (Dark Mode))

Dogelog Player is a Prolog system that is written
in 100% Prolog. Formerly Jekejeke Prolog was a
Prolog system that was written in 100% Java. We
created a new version of Jekejeke Prolog that
has 50% Prolog from Dogelog Player and is
still multi-threaded.
We trashed everything beyond the core of Jekejeke
Prolog and adopted the Dogelog Player libraries
and top-level, even library(markup) works! The
new Jekejeke Prolog is significantly slower than
Dogelog Player, almost a factor two. But it can still
serve for some cherry picking.
See also:
Dogelog Player goes Multi Threading
https://medium.com/@janburse_2989/6720695470fe