Adding scripts/trajectory_analysis.py
Adding qiime/trajectory_analysis.py
Merge branch 'master' of git://github.com/qiime/qiime into trajectory
Adding normalize samples w tests
Adding pandas to setup.py
Changing script to support pandas instead of MetadataMap
Merge branch 'master' of git://github.com/qiime/qiime into trajectory
Adding some more code
Solving merge conflicts
Renaming to compare_trajectories.py
Move test_trajectory to test_trajectories
Adapting compare_trajectories module to latest skbio
Adding tests
Adding documentation
Fixing small bug
Adding qiime_test_data dir for the compare_trajectories.py script
Parse mapping file using QIIME's parser and then change to a pandas DataFrame
get_seq_ids_from_seq_id_file, skip blank lines

Fixes #1576
Add test for get_seq_ids_from_seq_id_file

This function was previously untested, now there are tests. Test data includes
input file consisting of blank lines.
PEP8 Fixes