Load example-behaviour before example script
Add renderer guess in example shared file

& use it in every example.
Add example extern for exampleNS
Remove ol.RendererHints.createFromQueryData
Fixes mobile fullscreen example (no mode chooser)
Add failing test for feature with null geometries
[GeoJSON] Add support for feature with null geometries
Modify interaction doesn't need to store styles
Use minus sign as zoom out label
Better code formatting
Do not load tiles outside extents for TileWMS source
Add tests for TileWMS tileUrlFunction
Merge pull request #1697 from tonio/remove_renderer_guess

Remove `ol.RendererHints.createFromQueryData` from the library
Merge pull request #1705 from tonio/geojson_null_geometry

Allow GeoJSON features to have `null` geometries.
Merge pull request #1711 from elemoine/modify

Modify interaction doesn't need to store styles
Merge pull request #1713 from elemoine/zoomcontrol

Use minus sign as zoom out label
Add olx.tilegrid namespace to the API doc
Merge pull request #1714 from bartvde/issue-1714

404 in api docs for TileGridOptions (r=@twpayne)
Merge pull request #1702 from igrcic/tileWMS-extents-1701

Do not request tiles outside of extents for TileWMS source
Minor api fixes