Remove trailing whitespace
Only load ol.css in loader.js

Before this change, all the examples try to load ../css/ol.css, even in
hosted mode, where they should load ../build/ol.css instead.
Merge pull request #1527 from twpayne/vector-api-example-html

[vector-api] Avoid 404 in hosted examples
Remember rendered revision in ol.source.ImageCanvas
Remember rendered revision in ol.source.ImageWMS
Merge pull request #1539 from twpayne/vector-api-image-canvas-revision

[vector-api] Remember rendered revision in ol.source.ImageCanvas
Remove unused extractAttributes and extractStyles options
Allow multiple renderGeometryFunctions on ol.layer.Vector
Allow ol.format.KML.readNumber_ to read signs and exponents, thanks @tschaub
Fix typo in kml example
Fix date calculation
Merge pull request #1455 from twpayne/vector-api-render-geometry-functions

[vector-api] Multiple render geometry functions
Improve RegExp for parsing coordinates, thanks @tschaub
Merge pull request #1542 from twpayne/vector-api-kml-clean-ups

[vector-api] ol.source.KML clean-ups
Change forEachFeatureAtPixel arguments names
Pass layer to forEachFeatureAtPixel callback

This fixes a bug where the layer renderer instead of the layer is passed to the forEachFeatureAtPixel callback.