Added a q shortcut to quote
get-doc and set-doc no longer conditionally evaluate args
Fixed bug in let, documented potential performance improvements
upped default history to 5k lines
* clean up all tests
* bugfix for zero value functions, and test
* removed expand function, put in snippets
* added doc strings to Symbol type
* added doc strings to symbol declarations
* implemented display for Args type
* wrote a help function
* wrote docstrings for all builtins and config vars
