- Added equal? and member? checks to base.js (neither are being called anywhere, but we might want to eventually. equal? still needs code for the object equality case)
- Preliminary build of the macroexpander. Works pretty well already. Other things we'd want:
  	      - In-place macroexpansion for the macroexpansion mirror
	      - Ability to hide the macroexpansion pane
-Removed unnecessary line from css.lisp
-The macroexpansion is now hideable (with <esc>)
-Cells now have C-S-e bound to jump to the expansion editor (maybe consider a binding that lets you jump between the expander and its source cell)
-Updated README for cl-notebook
-Widened out macroexpansion window
-The commonlisp.js indenter regexps are now case insensitive
-Expanding in the macroexpander window now expands in-place
-Still need to figure out how to pop the indenting command off the undo stack (or keep it from getting pushed on in the first place)
-The builtin regex is now also case insensitive (basic highlighting happening in the macroexpansion window as a result)
-Fixed arg-hint bug affecting functions with literal defaults for keyword parameters
-Fixed arg-hint bug affecting functions with quoted symbols for keyword params
-Added README notes about macroexpansion window
-Not quite ready to take "pre-" off of the beta label for this project