Certain I/O functions (like `inp` or `repl`) do not need arguments, but
previously all functions required at least one argument to called correctly
(i.e. `(inp 0)` or `(repl "banana")`). Now, these can be called as intended:
`(inp)` or `(repl)`.
Installs examples/* to /usr/share/pebblisp
A basic REPL is one of these examples, replacing the built-in C version
with one actually written in PebbLisp. It can be invoked the same way:
running `pl` without any arguments.