New issue 2729: PyPy3-5.10 incorrectly decodes astral plane JSON characters
https://bitbucket.org/pypy/pypy/issues/2729/pypy3-510-incorrectly-decodes-astral-plane
Ned Batchelder:
This is a regression from pypy3-5.9
```
note = u"a\xa0\u266b\U0001d157"
round_tripped = json.loads(json.dumps({"note"
New issue 2730: non-ascii in filename confuses pypy3
https://bitbucket.org/pypy/pypy/issues/2730/non-ascii-in-filename-confuses-pypy3
mattip:
the following sequence (from a DOS terminal) shows how PyPy3 v5.10 handles
non-ascii in filenames improperly:
```
chcp 869
mkdir abcαßΓ
echo text > abcαßΓ