Use for loop instead of forEach in canvas map renderer
Add ol.renderer.Map#getLayerRendererByKey
Use for loop instead of forEach in DOM map renderer
Use for loop instead of forEach in WebGL map renderer
Use for loop instead of forEach in WebGL tile layer renderer
Avoid creating an ol.Size object
Cache array length in ol.Attribution
Cache array length in ol.Collection
Cache array length in ol.Map
Cache array length in canvas renderer
Cache array length in DOM renderer
Cache array length in WebGL renderer
Cache array length in layer renderer
Cache array length in ol.structs.Buffer
Cache array length in ol.TileRange
Use ii instead of len for array length cache for consistency
Merge pull request #631 from twpayne/dont-use-foreach-in-loops

Don't use forEach in loops