emacs lem.el 0.8 update

did some more hacking on lem.el. 0.8 release includes:

• rich editing of posts/comments
• rainbow bar indentation for comment trees
• tabulated list for communities overview
• fixes to comment trees and many other things.

there's still lots to fix up, but its running pretty well now.

& hm i wonder is there any other overlap btw emacsers + the lemmy codebase? i'm just adding features as i work out how things work, often in an amateur ad-hoc manner...