- Check for WebGL support, don't load if unsupported
- Check for IndexedDB support
- Make canvas support check message visible
- Colored debug output for warnings and errors
- Make it obvious status can be closed by clicking
- Don't use status to display non-critical errors
- Limit output message count
- Add clear output button
- Fix setting total memory
WebAssembly is still experimental, so disabled by default.
The HTML shell file now uses $GODOT_BASE, a placeholder for the
base filename, instead of $GODOT_JS, $GODOT_MEM and $GODOT_FS.