Some TeX Developments

I see from the LuaTeX mailing list that version 0.45.0 has been released. There is the usual long list of new things and bug fixes, but some that caught my eye:

• \input and \openin now accept braced filenames;
• The new primitives \aligntab and \alignmark are aliases for the use of & and # in alignments;
• LuaTeX can now optionally use kpathsea to find lua require() files.