pretty fancy variable definition

http://media0.giphy.com/media/13AHIZGzBvogqA/giphy.gif
Merge pull request #25 from TazeTSchnitzel/yolisp

improve documentation
even fancier
Merge pull request #26 from henrikbjorn/pretty-fancy

Pretty fancy
YOLO #YOLO (fixes #28)
Merge pull request #29 from TazeTSchnitzel/yolo

YOLO #YOLO (fixes #28)
fix let because it turns out using conses was actually a bad idea
Move down definition of new, make y() produce the nil list if no params
add ->, ::, ->(), ::(), fix new to use trailing args