rough estimation for addQuadCurveToPoint in RMShape.
fix custom marker colors - integer cast was done on a value of rangehttps://github.com/mapbox/mapbox-ios-sdk/commit/1cdf8cfe7342c2c3f52a9f4e88afda0f01f99569
added method for database cache file size retrieval
https://github.com/mapbox/mapbox-ios-sdk/commit/c3db4ca31942d7e10d309f4e0cb90110881d0426
fix crash with nil annotation
https://github.com/mapbox/mapbox-ios-sdk/commit/c0ce556f50203f1e1332425e03b4cd7edc5a4c3c