Update werkzeug to 0.14.1

Update isort to 4.3.1

Update pytest to 3.4.0

package.json: specify engines with node>=4

close #257

Update factory-boy to 2.10.0

Update sqlalchemy to 1.2.2

Update sqlalchemy to 1.2.1

Update pep8-naming to 0.5.0

Update sqlalchemy to 1.2.0

Update flake8-isort to 2.3

Update flake8-quotes to 0.13.0

Update werkzeug to 0.13

Update pytest to 3.3.1

Update flask-login to 0.4.1

Update flake8-quotes to 0.12.1

Update pytest to 3.3.0

Update pytest to 3.2.5

Update jinja2 to 2.10

Update flake8-debugger to 3.0.0

Update sqlalchemy to 1.1.15