Hello all,

Submitted today to CTAN, highlights:

 - Fix category code production by \tl_lower_case:n, etc., when
   Unicode engines are in use
 - Produce catcode-11 "e" in \fp_to_scientific:n, etc. (breaking
 - Various minor documentation tweaks
 - Updates to some accent handling by case changing code
 - Preparations for TeX Live 2016 binary changes

As usual please allow ~48h for this to appear in the standard locations.