added module docstring
more doc bits
iter_ is tracked during execution
more docs
sphinx is pain:
doc additions
Adding to_file function to OrdinationResults
Fixing tests
Adding tests
Fixing merge conflicts
Merge branch 'master' of https://github.com/biocore/bipy into ord_serial
Fixing stash messing
Adding tests for CA ouput
Adding CCA scores tests
ENH: Add cythonized subsample
ENH: Allow it to overwrite the pure Python implementation.
TST: Allow testing of both modules
ENH: Add C source code.
ENH: Installation
MAINT: Add future to requirements.

(https://github.com/PythonCharmers/python-future)