replaced call to skbio's correlation function with call to identical functionality from scipy, partially addresses #67
fixes #353
fixes #352
fixes #177
fixed some imports
fixed bad doctest import; fixes #205
some doc fixes
doc edit
removed code that will be replaced with scipy calls; partially addresses #67

most, but possibly not all, of this functionality is available in SciPy. We
ideally want to pull that code from SciPy rather than maintain ourselves.
Merge branch 'master' of github.com:biocore/bipy
replaced skbio anova call with scipy anova call. we love you scipy
fixed problem with doc string

when we switched over to the scipy one-way ANOVA this doc test p-value started
coming back as nan. it turned out that this was right, because there was no
within-group variance in the groups being compared and our ANOVA wasn't
handling that correctly. this is an example of why we should make a concerted
effort to use scipy when possible for our stats.
Merge branch 'master' of github.com:biocore/bipy
Merge pull request #357 from gregcaporaso/master

various small issues in prep for 0.1.0