Feature request: support sessions in ob-emacs-lisp via IELM

[Suhail Singh]

IELM (M-x ielm) derives from comint-mode and provides a convenient
interactive environment for evaluating lisp expressions.  Some of the
conveniences such as automatically evaluating expressions can make
iterative development easier.

Currently, ob-emacs-lisp does not support sessions.  It would be nice if
support of sessions was added to ob-emacs-lisp such that the session
buffer is an ielm-mode buffer.

-- 
Suhail