[pypy-issue] Issue #2365: rinohtype much slower on PyPy3 (pypy/pypy)

[Brecht Machiels]

New issue 2365: rinohtype much slower on PyPy3
https://bitbucket.org/pypy/pypy/issues/2365/rinohtype-much-slower-on-pypy3

Brecht Machiels:

```
#!bash

pip install rinohtype
wget http://docutils.sourceforge.net/docs/user/rst/demo.txt
rm -rf demo.rtc && time rinoh demo.txt
```

CPython 3.3.6 takes about 16 seconds on my machine. PyPy3 takes about 34 seconds.

(I installed PyPy through pyenv, which reports pypy3.3-5.2-alpha1, but `pypy -V` reports "PyPy 5.2.0-alpha0")