Replace usages flet -> cl-letf in eval-sexp-fu.el
comment out eval-sexp-fu tests
require cl-lib in eval-sexp-fu
Prompt user to confirm sending if blank subject or body
Tweak html gen
Restore C-c q to close message
Delete org headers in plaintext message section
Show outgoing message in *Messages*
Remove most todo keywords (these are now in file vars)
Add bison-mode
Org drill picker command runs drills in all agenda files