Import normalized SupportedPlatforms
Change multitasks to tasks.

It doesn't appear that there's a way to specify the '-j' flag when using
Rake::Task#invoke, and we're only running these tasks on one core
anyway. As such, let's just run these as plain-old tasks.
Only capture exceptions and show progress in debug mode
Do not trap and re-raise top-level exceptions
Send reported exceptions to Sentry
Merge pull request #4 from gofullstack/supported-platforms

Revise SupportedPlatforms migration