BLD: Downgrade scikit-bio dependency to be 0.1.4
BLD: Downgrade scikit-bio dependency to be 0.1.4

This allows the dependency to be compatible between qiita and QIIME-dev.

adamrp/qiita,biocore/qiita,squirrelo/qiita,adamrp/qiita,RNAer/qiita,biocore/qiita,antgonza/qiita,biocore/qiita,josenavas/QiiTa,wasade/qiita,squirrelo/qiita,josenavas/QiiTa,RNAer/qiita,ElDeveloper/qiita,squirrelo/qiita,ElDeveloper/qiita,biocore/qiita,adamrp/qiita,adamrp/qiita,wasade/qiita,RNAer/qiita,antgonza/qiita,josenavas/QiiTa,RNAer/qiita,antgonza/qiita,squirrelo/qiita,antgonza/qiita,josenavas/QiiTa,ElDeveloper/qiita,wasade/qiita,ElDeveloper/qiita