Bump minor versions of dependencies

Author: Aristarhys

requirements.txt

@@ -1,9 +1,9 @@
 bayesian-changepoint-detection==0.2.dev1
 changepy==0.3.1
 hyperopt==0.1.2
-numpy==1.17.0
-pandas==0.25.1
+numpy==1.17.5
+pandas==0.25.3
 pykalman==0.9.5
-scipy==1.2.2
-statsmodels==0.10.1
-scikit-learn==0.19.1
+scipy==1.2.3
+statsmodels==0.10.2
+scikit-learn==0.19.2