I'm a bit confused, all methods in `test_table` were passing when @ElDeveloper and I issued this PR. I specifically remember resolving this issue. Is your repo up to date?

```bash
(python27)10:07:11 tests@issue-290$ python test_table.py
........................................................................
----------------------------------------------------------------------
Ran 72 tests in 0.342s

OK
(python27)10:07:16 tests@issue-290$ git pull origin issue-290
remote: Counting objects: 85, done.
remote: Compressing objects: 100% (85/85), done.
remote: Total 85 (delta 58), reused 0 (delta 0)
Unpacking objects: 100% (85/85), done.
From github.com:wasade/biom-format
 * branch            issue-290  -> FETCH_HEAD
Updating 0de5b30..6274ed2
Fast-forward
 biom/table.py       |  23 ++++++-----
 tests/test_table.py | 390 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 395 insertions(+), 18 deletions(-)
(python27)10:07:27 tests@issue-290$ python test_table.py
.............................................................................
----------------------------------------------------------------------
Ran 77 tests in 0.384s

OK
(python27)10:07:30 tests@issue-290$
```