Small doc fix: loosing -> losing
Merge pull request #75 from talumbau/doc_fix

Small doc fix: loosing -> losing
The -msse2 flag is only necessary for Intel 32-bit actually
support pickle with carray.__reduce__
test that ctable is pickleable
move build_carray from pickle_support to .utils
rely on MayBeDiskTest for setup-teardown in pickle
Merge pull request #79 from mrocklin/pickle

ctables and carays with rootdirs pickle themselves by their rootdir.
Using the MayBeDiskTest class for allowing less boilerplate code
fix and update changelog with recently merged pull-requests