#Upgrade 0.50 to 0.51

Change startupjs and all @startupjs/* dependencies in your package.json to ^0.51.

#RELEASE NOTES

Upgraded dependencies to fix vulnerabilities issues (#1034).

#BREAKING CHANGES

Since the react-native-web version was upgraded from 0.14 to 0.18 (see RNW changelog)[https://github.com/necolas/react-native-web/releases].