==============================================================

Luatex Release 0.89.0 was released 2016020500 

==============================================================

No fundamental changes, just some fixes / improvements (and of course new bugglets).

- New backend things:

 \pdfvariable pkfixeddpi = integer % > 0 : use only default dpi (so one can do with one high res instance)

 \pdfvariable ignoreunknownimages = integer % > 0 : ignore missing and inject something empty (to be used with care)

  and one can do this:

 \edef\foo{\pdfvariable foo}

 \def \oof{foo}

 \ifx\foo\oof don't fool me\fi

 (side effect of no longer aborting on missing, so one implement a catch)