tcopy 0.1.2

Basic tail call removal decorator

# tcopy

_Do not use this._

A direct tail call optimizing decorator for Python.

## Examples:

```python
from tcopy import tco

@tco
def fib(n, x=0, y=1):
if n == 0:
return x
return fib(n - 1, y, x + y)
```

The `tco` decorator will rewrite `fib` into the following at
definition time:

```python
def fib(n, x=0, y=1):
while 1:
if n == 0:
return x
n, x, y = n - 1, y, x + y
```

## Quirks

`tco` uses `inspect.getsource` to grab a function's source code from
disk. Because of this, the decorator does not work in the Python REPL.