update racer dep
0.5.12
fix model bundle error handling
fix error logging statement
remove try catch around client side rendering
add support for source map changes in racer
fix typo
put sourcemap comment at bottom of script file instead of middle
use model.unloadAll to unload all contexts when routing
cleanup components after transitional routes; use model.destroy to do the component event cleanup
reimplement pack for pre-building in production
fix scope bug in previous commit