Add modify feature interaction and its example
Make modify interaction use FeaturesOverlay

Instead of a whole map.
Bring MultiPolygons back in examples
Move variables declaration at the top
Force remove vertexFeature when there’s no features left in FeaturesOverlay
Ensure styles are defined in FeaturesOverlay
Add style for Geomettry Collection
Anchor the popup to the top of the icon
Roy G. Biv
Don't render feature with all countries

The feature with undefined id is a multi-polygon representing all countries.  Instead of rendering all multi-polygons with a lower z-index, we just avoid rendering this single feature.
Merge pull request #1666 from tschaub/topojson-tweak

Don't render feature with all countries.
Merge pull request #1665 from tschaub/roy-g-biv

Roy G. Biv.
Merge pull request #1663 from tschaub/popup

Fix popup anchor in icon example.
As it is currently used, opt_options is not optional

It would be nice if the compiler would warn us of things like this (accessing properties of undefined).
Merge pull request #1670 from tschaub/draw-options

Options to draw interaction are not optional.
Clarify the style function signature
Merge pull request #1673 from tschaub/select-example

Clarify the style function signature.
Move segment writers in their own methods
Add support for GeometryCollection in modify interaction
Use Select interaction in modify interaction example.