Merge pull request #11 from minrk/pip-compile

requirements.in

+numpy
+matplotlib==3.*
+seaborn==0.10.1
+pandas

requirements.txt

-numpy==1.16.*
-matplotlib==3.*
-seaborn==0.8.1
-pandas
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile
+#
+cycler==0.10.0            # via matplotlib
+kiwisolver==1.2.0         # via matplotlib
+matplotlib==3.2.1
+numpy==1.18.5
+pandas==1.0.4
+pyparsing==2.4.7          # via matplotlib
+python-dateutil==2.8.1    # via matplotlib, pandas
+pytz==2020.1              # via pandas
+scipy==1.4.1              # via seaborn
+seaborn==0.10.1
+six==1.15.0               # via cycler, python-dateutil