fix utils isNumber (#594)
fix utils isNumber (#594)


pdanpdan/quasar,pdanpdan/quasar,simarust/quasar,fsgiudice/quasar,pdanpdan/quasar,quasarframework/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,fsgiudice/quasar,quasarframework/quasar,quasarframework/quasar,rstoenescu/quasar-framework,simarust/quasar,simarust/quasar,quasarframework/quasar,rstoenescu/quasar-framework,fsgiudice/quasar