The primary change since 0.4.2 is the reorganization of the JavaScript modules to a more standard AMD layout (#12). This change makes lib/ the AMD/RequireJS baseUrl so third-party libraries can be require()d via their standard names (jquery, leaflet, etc) rather than the old non-standard wq/lib/jquery style paths. wq init, the tests, the documentation, and the project template have all been updated to reflect this new layout.
Other Changes
Some improvements to outbox support in wq/store.js.
Added AMD definition to proj4leaflet upstream (kartena/Proj4Leaflet#41)