This diff:
* adds height as another parameter passed to the measure function, computed the same way width is
* adds tests for this extension, which has involved adding a new measure function to all of js, c, java and c# tests
8f6a96adbc added a test in isDimDefined that checks if `value > 0.0`, but unfortunately, it did not faithfully port the JavaScript version which is `value >= 0.0`. Sadly, no test covered this so it went unnoticed.
