Update raven-js to latest sha (3.0.0-beta1)
Update raven-js to latest sha (3.0.0-beta1)

/cc @getsentry/team

gencer/sentry,BuildingLink/sentry,JamesMura/sentry,alexm92/sentry,zenefits/sentry,fotinakis/sentry,gencer/sentry,ifduyue/sentry,gencer/sentry,ifduyue/sentry,zenefits/sentry,jean/sentry,looker/sentry,looker/sentry,looker/sentry,jean/sentry,jean/sentry,JackDanger/sentry,gencer/sentry,looker/sentry,mvaled/sentry,mvaled/sentry,JackDanger/sentry,alexm92/sentry,ifduyue/sentry,zenefits/sentry,jean/sentry,jean/sentry,BuildingLink/sentry,mvaled/sentry,mvaled/sentry,beeftornado/sentry,mvaled/sentry,fotinakis/sentry,fotinakis/sentry,JamesMura/sentry,mitsuhiko/sentry,beeftornado/sentry,BuildingLink/sentry,BuildingLink/sentry,JamesMura/sentry,gencer/sentry,beeftornado/sentry,JamesMura/sentry,looker/sentry,fotinakis/sentry,BuildingLink/sentry,ifduyue/sentry,mvaled/sentry,JamesMura/sentry,ifduyue/sentry,mitsuhiko/sentry,alexm92/sentry,zenefits/sentry,JackDanger/sentry,zenefits/sentry