'when' macro, 'simplify' function, and 'visit' function
added :s to REPL and simplified output for :d if std.lsr is loaded
made :s and ! work multiline in REPL
scrubbed mapping refs out of browserified code, for the time being, notebook evaluation starting to work, again...

Will check here for sourcemap support:  https://github.com/thlorenz/browserify-sourcemap-example
Merge branch 'bill' of https://github.com/zot/Leisure.git into roy

Conflicts:
	lib/runtime.map