Added codecs to open file, as default does not work on Windows.
Added support for meta keys with more than 1 value in wordlists.
First version of Dictionary class.
First version of ConceptGraph and script that extracts a wordlist from dictionaries.
Now using class instead of function for concept comparison.
Now using QLCID instead of IDs in wordlist from dicts.
Merged files from upstream/master
Merged with upstream master.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Updated dictionary module. Fixed bugs in align.sca and convert.plot.
Merged local fork.
Merge branch 'master' of https://github.com/pbouda/lingpy
Made nltk a weak depency.
Merge remote-tracking branch 'upstream/master'
Fixed bug in plot.py.
Merge pull request #28 from pbouda/master

Added dictionary class to parse qlc dictionaries