added new and long list of test cases for segmentation in lingpy
fix compatibility problem im sound_class tests (py2)
update tests of read/csv.py to bring coverage to 100%
fixed a bug in a *** alias function in csv.py, this function should probably generally be extinguished, this should fix the PR
use read_text_file instead of codecs in test_sound_classes
now using also the lines=True keyword offered by read_text_file
cleaning up the code and removing useless codecs-imports from few files
found one further uncovered statement in tests for read.csv
Merge pull request #152 from LinguList/master

Increasing the accuracy of default tokenization/segmentation in LingPy