Merge pull request #4 from sergiooramas/dependabot/pip/nltk-3.4.5

Bump nltk from 3.2.5 to 3.4.5

Author: urinieto

requirements.txt

@@ -22,7 +22,7 @@ kiwisolver==1.0.1
 librosa==0.6.0
 llvmlite==0.22.0
 matplotlib==2.2.2
-nltk==3.2.5
+nltk==3.4.5
 numba==0.37.0
 numpy==1.14.2
 pandas==0.22.0