Errnous behavior when output contains $$ (in this case displaying
file_search_maxima) is fixed. TeX separator is now $$$$$$ to distiguish
$$.
Issue: all of askinteger, asksign, csetup in ctensor, demo do not work.
Root cause: Loop in onEditorAction() handling nested qe() did not
consider intermittent user input as above.
Fix: The Loop is modified so that Loop is broken when user input is
requested. See Release plan 2.3 for more details.
Release preparation for 2.4
asset is updated to enforce of additional install