Here are some useful notes on API changes in Mango 2.6 which is currently available as beta.
a. We made the URLs more URL-like by replacing Camel Case with dashes, for example the endpoint /rest/v1/pointValues.json is now /rest/v1/point-values.json
d. We put an RQL endpoint for most resources as the base endpoint. So for example previously /rest/v1/dataPoint.json would list all data points , it now is an RQL endpoint. Note that RQL endpoints require some RQL to be passed in. For example /rest/v1/data-points.json is no longer valid, it can be /rest/v1/data-points.json?limit(100)
There are some new example files in the 2.6 dashboard folder under web/modules/dashboards/web/private/tutorials. We will continue to work on adding more examples.