You might almost forget that it's a Python REPL.... almost...
* Undefined variables are now created on-the-fly to allow for simpler access to executables
* The `ConcussionBase` type now supports many more operator overloads, including division, subtraction and unary negation, which make the process of typing paths much simpler
* Fix an error where programs were inadvertently executed multiple times due to accidentally evaluating them as `bool` objects instead of checking if they were `None`
* Pipes between programs should now work a little better