Update requirements

requirements.txt

-astroid==1.5.3
-coverage==4.4.1
-decorator==4.0.11
-ipython==6.1.0
+astroid==2.2.5
+coverage==4.5.3
+decorator==4.4.0
+ipython==7.5.0
 ipython-genutils==0.2.0
-isort==4.2.15
-jedi==0.10.2
-lazy-object-proxy==1.3.1
+isort==4.3.20
+jedi==0.13.3
+lazy-object-proxy==1.4.1
 manage.py==0.2.10
 mccabe==0.6.1
-numpy==1.16.1
+numpy==1.16.3
 pandas==0.24.2
-pexpect==4.2.1
-pickleshare==0.7.4
-prompt-toolkit==1.0.14
-ptyprocess==0.5.1
-py==1.4.34
-Pygments==2.2.0
-pylint==1.7.1
+pexpect==4.7.0
+pickleshare==0.7.5
+prompt-toolkit==2.0.9
+ptyprocess==0.6.0
+py==1.8.0
+Pygments==2.4.1
+pylint==2.3.1
 pymonetdb==1.1.1
-PyMySQL==0.7.11
-pytest==3.2.3
-python-dateutil==2.6.0
-pytz==2017.2
+PyMySQL==0.9.3
+pytest==4.5.0
+python-dateutil==2.8.0
+pytz==2019.1
 simplegeneric==0.8.1
-six==1.11.0
+six==1.12.0
 SQLAlchemy==1.2.19
 -e git://github.com/jvwinandy/sqlalchemy-monetdb.git@1.0.1#egg=sqlalchemy-monetdb
 traitlets==4.3.2
 wcwidth==0.1.7
-wrapt==1.10.10
-xlrd==1.0.0
-XlsxWriter==0.9.8
+wrapt==1.11.1
+xlrd==1.2.0
+XlsxWriter==1.1.8