Improve type checking in ol.animation
Improve type checking in ol.coordinate
Improve type checking in ol.ImageUrlFunction
Improve type checking in ol.renderer.Layer
Improve type checking in ol.ResolutionConstraint
Improve type checking in ol.RotationConstraint
Improve type checking in ol.source.BingMaps
Improve type checking in ol.source.StaticImage
Improve type checking in ol.source.WMTS
Improve type checking in ol.TileUrlFunction
Improve type checking in ol.View2D
Merge pull request #677 from twpayne/improve-type-checking

Improve type checking