Create map_element class and unit tests
fix format
Merge remote-tracking branch 'origin/dev' into map_dev_2
Create map_data, ma_data_node and unit tests
Merge pull request #10 from stevenh47/stevenh47_map_data_node

Create map_data, ma_data_node and unit tests
Merge pull request #6 from stevenh47/map_dev_2

Create map_element class and unit tests
Merge pull request #11 from stevenh47/map_dev