Scheduled monthly dependency update for November (#108)

* Pin matplotlib to latest version 3.0.1

* Pin multiprocess to latest version 0.70.6.1

* Pin numpy to latest version 1.15.4

* Pin pandas to latest version 0.23.4

* Pin pyyaml to latest version 3.13

* Pin scipy to latest version 1.1.0

* Pin tqdm to latest version 4.28.1

* Update astropy from 3.0.4 to 3.0.5

* Update hypothesis from 3.81.0 to 3.82.1

* Update requirements.txt

requirements_dev.txt

@@ -1,13 +1,13 @@
-astropy==3.0.4
+astropy==3.0.5
 codacy-coverage==1.3.11
 codeclimate-test-reporter==0.2.3
 coverage==4.5.1
-hypothesis==3.81.0
+hypothesis==3.82.1
 joblib==0.12.5  # >=0.12.3
-matplotlib==3.0.0
-multiprocess==0.70.6
+matplotlib==3.0.1
+multiprocess==0.70.6.1
 mypy==0.641
-numpy==1.15.2
+numpy==1.15.4
 pandas==0.23.4
 pandoc==1.0.2
 pre-commit==1.12.0
@@ -16,4 +16,4 @@ pytest-cov==2.6.0
 python-coveralls==2.9.1
 pyyaml==3.13
 scipy==1.1.0
-tqdm==4.25.0
+tqdm==4.28.1