Window to Remote Datasource

• a middle layer between a data source and frontend - a disposable infinite-scroll handler

Handles the boilerplate of

• left and right data scrolls using only .next() and .previous() functions
• scaling buffer and demands according to scaled dataset (start with 10 wide and go to 100 wide)
• in-browser buffer of data
• demanding only data not already available
• handling edge cases - start of data/end of data

Use cases:

• Quickly changing underlying datasource without changing mid and front(e.g. searches)
• Same data, multiple representations(e.g. one WtRD for view finder, one for a chart)

API: See tests.js