ssw builds in sphinx
more docstrings
more tests
pep8
pep8 .pyx or something like it
fixed sphinx formatting, still pep8
API: cache is now by tip
ENH: smarter tip and non-tip lookups
pep8 with Cython is hard...
merge fix
Merge branch 'master' of github.com:biocore/scikit-bio into cache_fix

Conflicts:
	skbio/core/tree.py
added license, removed doc from tests
ENH/API: assign_ids now matches IDs from index_tree, to_array now
returns an array representation of the tree
Merge branch 'master' of github.com:biocore/scikit-bio into to_array
now has aligned strings
blosm50 nt table in tests
Merge branch 'master' of github.com:biocore/scikit-bio into to_array

Conflicts:
	skbio/core/tests/test_tree.py
tests for new aligned sequence methods
test for protein added
Merge pull request #320 from wasade/to_array

To array