Add #!/usr/bin/env pypy3 to top of fancy.py

[misterbeebee]

sunfish.py has a shebang line, but fancy.py doesn't.

To make fancy.py run out-of-the-box,
add #!/usr/bin/env pypy3 to top of fancy.py.`

(fancy.py doesn't work with Python2 pypy, so requires pypy3. sunfish.pydoes run under Python2pypy`)

[misterbeebee]

Correction: I think fancy.py will work with pypy; pypy3 not required.

[thomasahle]

This is fixed in the latest version. Thanks.