Allow maximum tilt angle configuration

[jonty-dawson]

Currently camera tilt (eg as supplied to MoveCamera vis

android-api/sdk/src/main/java/com/eegeo/mapapi/camera/CameraPosition.java

Line 53 in 63ce6eb

public final double tilt;

) is constrained to some maximum value by internal implementation. The maximum allowed tilt value is determined by camera altitude.
It would be useful to developers to be able to configure the behaviour here, allowing default behaviour to be overridden - at least higher zoom levels before the map control switches to 'rotating globe'.