Merge pull request #39 from wellcometrust/pin-versions

Pinning keras and tensorflow versions in setup

Author: lizgzil

setup.py

@@ -45,9 +45,9 @@
     install_requires=[
         "spacy<2.2.0",
         "pandas",
-        "tensorflow",
-        "keras",
-        "keras-contrib @ https://github.com/keras-team/keras-contrib/tarball/master",
+        "tensorflow==1.15.2",
+        "keras==2.2.5",
+        "keras-contrib @ https://github.com/keras-team/keras-contrib/tarball/5ffab172661411218e517a50170bb97760ea567b",
         "en_core_web_sm @ https://github.com/explosion/spacy-models/releases/download/en_core_web_sm-2.1.0/en_core_web_sm-2.1.0.tar.gz#egg=en_core_web_sm==2.1.0",
         "sklearn",
         "sklearn_crfsuite",