Merge branch 'master' into release
Merge branch 'master_python2.3' into release_python2.3
Merge branch 'release' into release_python2.3
Updated Sphinx doc for the new uarray() and umatrix() arguments.
Merge branch 'master' into master_python2.3
Merge branch 'master' into release
Merge branch 'master_python2.3' into release_python2.3
Merge branch 'release' into release_python2.3
Fixed typo.
Design choices for the API breakage explained.
Design choice explanation expanded.
Fixed formatting problem.
Added missing conjunction.
Merge branch 'release' into release_python2.3
Merge branch 'release_python2.3' into master_python2.3