Version 6.0.0

• Moved MapProvider to certain subfolder (#502)
• Added GeolocationButton (#505)
• Added ZoomButton (#530)
• Added ZoomToExtentButton (#513)
• Added MultiSliderComponent (#510)
• Removed 'Multi' from geomType comparison in mergeGeometries (#518)
• Updated/Synchronized Toolbar styles (#523)
• Disabled generation of package-lock.json (#527)
• Introduced styleguidist to generate examples and documentation (#504)
• Added getLayersByProperty util to MapUtil (#533)
• Add HOC to enable drag & drop of geojson files (#509)
• Use animations by default when zooming (#524)
• Enable and obey 'space-infix-ops' eslint rule (#526)
• Several package updates