moved default height to importers
reverting roof height handling back to importers
few alignments for points as {x,y} objects

rendering fixed
new ellipse tangent calculation added

fixed negative heights when roofHeight is present and building height is not
renderer skips now on height_+roofHeight_ <= 0
WIP
extended XAPI for cylindric shapes
moving methods from objects playground over to renderer
drawing arcs fixed
basic point properties renamed
handling roofHeight as well

cylindric shadows added
new build + cleanup
new build
cleanup & preparations
Merge branch 'master' into roofs

Conflicts:
	dist/OSMBuildings-Leaflet.debug.js
	dist/OSMBuildings-Leaflet.js
	dist/OSMBuildings-Leaflet.js.gz
	dist/OSMBuildings-OpenLayers.debug.js
	dist/OSMBuildings-OpenLayers.js
	dist/OSMBuildings-OpenLayers.js.gz
	src/Data.js
	src/FlatBuildings.js
	src/Import.js
	src/Shadows.js
	src/constants.js
	src/geometry.js
	src/import/GeoJSON.js
	src/import/OSMXAPI.js
	src/objects.js
	src/render.js
Merge branch 'master' into roofs

Conflicts:
	dist/OSMBuildings-Leaflet.debug.js
	dist/OSMBuildings-Leaflet.js
	dist/OSMBuildings-OpenLayers.debug.js
	dist/OSMBuildings-OpenLayers.js
	src/import/OSMXAPI.js
preparing more geometry types
Merge branch 'master' into roofs

Conflicts:
	dist/OSMBuildings-Leaflet.debug.js
	dist/OSMBuildings-Leaflet.js
	dist/OSMBuildings-OpenLayers.debug.js
	dist/OSMBuildings-OpenLayers.js
	src/Import.js
	src/import/OSMXAPI.js
outstanding merges
marging release version
Merge branch 'master' into develop