Add type to login.py method, update version to 1.0.x, breaking change to drop python2

.travis.yml

 language: python
 python:
-  - 2.7
   - 3.5
   - 3.6
+  - 3.7
 before_install:
   ## courtesy of http://conda.pydata.org/docs/travis.html
   - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then

geomagio/webservice/login.py

 from __future__ import absolute_import, unicode_literals, print_function
+from builtins import str
 
 import flask
 import flask_login
@@ -60,7 +61,7 @@ class User(db.Model, flask_login.UserMixin):
 
 
 @login_manager.user_loader
-def _load_user(user_id):
+def _load_user(user_id: str):
     return User.query.filter_by(openid=user_id).first()
 
 

package.json

 {
   "name": "geomag-algorithms",
-  "version": "0.9.0",
+  "version": "1.0.0",
   "homepage": "http://geomag.usgs.gov/",
   "repository": "https://github.com/usgs/geomag-algorithms.git",
   "description": "Geomagnetism algorithms.",

setup.py

@@ -2,7 +2,7 @@ from distutils.core import setup
 
 setup(
     name='geomag-algorithms',
-    version='0.9.0',
+    version='1.0.0',
     description='USGS Geomag IO Library',
     url='https://github.com/usgs/geomag-algorithms',
     packages=[