Document custom controls
Use goog.dom.classlist functions

The goog.dom.classes functions have now been deprecated.  See https://github.com/google/closure-library/commit/97e8a0c0fc7238a56cc4dacd4a96fd4c0735b992
Export ol.format.GeoJSON.writeGeometry()
Improve docs for define tag
Mark the color argument to ol.color.transform non-nullable

Inside this function goog.vec.Mat4.multVec3 is called and and its
arguments must not be null.
Merge pull request #2287 from tsauerwein/geojson-write-geometry

Export ol.format.GeoJSON.writeGeometry()
Merge pull request #2284 from tschaub/classes

Use `goog.dom.classlist` functions instead of the deprecated `goog.dom.classes` functions.
Merge pull request #2288 from fredj/latest-closure-library

Mark the color argument to ol.color.transform non-nullable
Merge pull request #2286 from probins/defines

Improve docs for define tag
Merge pull request #2278 from probins/control

Document custom controls
Fix spelling of GEOMETRY_RENDERERS_
Add ol.events.condition.mouseMove
Add ol.events.condition.click
Minor apidoc change
Add "action type" select to select-features example

Making it possible to choose between three select interactions, one that works on "singleclick", one that works on "click", and one that works on "mousemove".
Improve docs for interaction.Select
Introduction tutorial
Merge pull request #2276 from elemoine/select

Add "action type" select to select-features example
Merge pull request #2290 from pagameba/typo

Fix spelling of GEOMETRY_RENDERERS_
Use closure-util 0.19.0