Update to use .NET Standard 2.0

[danielz1985]

Move to System.Reactive v4.0

[somdoron]

Want to make a pull request?

[sharpe5]

I'm happy to do a code review if you make a pull request. Even if you make one that is mostly complete but not quite right, I'll do the rest. So give it a shot :)

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On Thu, 10 Oct 2019, 09:17 Doron Somech, ***@***.***> wrote: Want to make a pull request? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#50?email_source=notifications&email_token=AAJ3FJFUGDUKTFS4PYFKLR3QN3QGTA5CNFSM4I7DV4Z2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEA3LDNQ#issuecomment-540455350>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJ3FJBXODYRABOOPLXAGKTQN3QGTANCNFSM4I7DV4ZQ> .