Add failing test for issue #50: list(list([1, 2, 3])) != [1, 2, 3]
Fix for issue #50: list(list([1, 2, 3]))
Remove fast-path __new__ for newdict; add explicit comments for newbytes and newstr
_url_collapse_path was named _url_collapse_path_split

for older version of python 2.7
Merge branch 'master' into v0.12.x: Nicolas Delaby's patch (#53)

This restores Python <= 2.7.3 support (#53)
Improve test_safe_futurize_imports: more relevant
Add failing test for issue #51: bytes.maketrans()
Add bytes.maketrans() method (issue #51)
Add xfail test for issue #12
Update What's New doc page with info about v0.12.2
Version bump to v0.12.2
Py2.6: ignore missing _url_collapse_path in CGIHTTPServer