* Works on soon-to-be-released 0.98 (triple quote strings removed)
* 50% more iterations per second on perf3.mal
* Removed 'src' directory, use 'factor' as the root
* Using 'mal' namespace for core, reader, printer, malenv, types
* Fixed issue with "empty" readline input (should be ignored and wasn't)
* Tried to simplify some of the code
