Change the PCoA from cogent to skbio
Solving small PEP8 issue
Remove useless comments
Using skbio PCoA
Fix principal_coordinates.py to use skbio's PCoA
Merge branch 'master' of git://github.com/qiime/qiime into PCoA
Fixing to_file argument
Making QIIME dependent of emperor-0.9.3-dev
Fixing PEP8 issues and not-closed file handlers
Move procrustes from cogent to skbio. Fix coord parser.
Move to skbio's coordinates parser/formater
Fixing tests for transform_coordinate_matrices.py
Fixing tests
Fixing tests
Fixing input test files
Addressing @ElDeveloper's comments
Merge pull request #1484 from josenavas/PCoA

Move PCoA to use skbio's one