Convergence anomalies

All the Convergence anomalies:
 * London anomaly
 * Motorway anomaly
 * Car park anomaly
 * School clasroom anomaly
 * Prospero indrustries anomaly
 * Los Angeles anomaly
 * Manchester anomaly
 * New York anomaly
 * Hong Kong anomaly
 * Hattersly anomaly
 * San Fransisco anomaly
 * Basel anomaly
 * Dubai anomaly
 * Barcelona anomaly
 * Tokyo anomaly
 * to be added anomalies