Helper functions for extracting terminus and "normal"  links
Merge branch 'master' of https://github.com/calpath/model-elements
Allow null lat/long in nodes
Regenerate Node class to allow null lat/long
Re-exported scenarios from mm-network-import
Per Alex, disallow null lat/long in nodes. Re-export all scenarios, update tests.
Add missing newline
Merge pull request #33 from andrewbts/master

Re-imported MM scenarios per new model-elements