ex:

for i in xrange(5):
    pass
else:
    return 2
"unreachable here!"

We didn't prune the "unreachable here" line, which caused
some issues.  I guess we could also support compiling
trivially-unreachable blocks.

- Allow unicode arguments to str.encode/str.decode
- Detect float parsing errors
- 'VAR_WITH_UNDERSCORES'.isupper() should be True
- str.rpartition()
- Switch to CPythons str.split

(ignore things that are clearly not importable)

Move stat.h include into pyport.h

I think there's a theoretical issue where a GC happens between the
assignment to a static slot and the call to PyGC_AddRoot.  I don't
think this was causing any issues, but I think it possibly could.

Add a few 'long' methods, support tuple sublasses, add uuid test and fix a _struct GC bug

I don't know how well this is followed in practice, but "!"
is supposed to just be for irgen-specific names that should
not make it to other tiers.  The closure and generator variables
are more like part of the inter-tier contract, so I think make more
sense as "#" names.

Add the zipimport, csv and ssl module

and let file.next() raise a StopException when on the end
To make the csv module work on files.

travis try enabling apt cache

Add bytearray and add a memoryview test

don't let AttributeError exceptions bubble out of softspace.  fixes fasta.py

virtualenv fixes

implement PyNumber_Divmod to fix datetime.timedelta(0)

Add unichr()

make tester produce useful help messages