Release 1.5.2 * further work on synchronization to avoid deadlocks (see https://josm.openstreetmap.de/ticket/14638) * fix NullPointerException when trying to "jump to blue" (see https://josm.openstreetmap.de/ticket/12742) * fix IllegalComponentStateException when the plugin wants to show a ImageInfoHelpPopup (see https://github.com/JOSM/Mapillary/issues/48 and https://josm.openstreetmap.de/ticket/14627) * caches are all moved to a centralized class * more test coverage