TODO / Suggestions

• Refactor CSS to be more readable, maintainable
• Proper explanation of what markerManager.computeMarkerState() is doing
• make sure code is supported on all browsers
• ensure page looks good on various devices
• better browser tab icon
• make tooltip size scale better with different device sizes
• Dynamic max zoom level instead of hardcoded value (basically, if a marker does not have space to split at the max zoom level, increase the max zoom level until it has enough space)
• 2 space indents (JS convention)
• more robust system for fallback map tile providers
• Popups could stay visible when zoom level changes, location simply moves with the person's new location
• tweak how fast marker radius grows so doesn't look bad if dataset grows
• If tile fails to load, switch to geojson completely so doesn't look inconsistent?
• check for memory leaks