Upgrade FCS

[enricosada]

after fix for #180 is released

[NinoFloris]

pinging you, could you upgrade fcs? most of aspnet/microsoft.extensions ecosystem is moving to 2.0 so we're a bit stuck

[jlewicki]

Another friendly ping. Users (well me at least) wanting to try out .net core 2 with VS Code appear to be getting bit by this.

[dsyme]

@enricosada @rneatherway @Krzysztof-Cieslak @ncave FCS 14.0.2 is now available

[enricosada]

thx @dsyme , ongoing in #196

[enricosada]

Closing, merged with #200

@dsyme the only issue so far afaik (excluded projcet cracker and msbuild 15), was with the linter but that's NOT becaue FCS ( fsharplint 0.7 used FCS 13, and FSAC used FCS 14 so api mismatch and crash #205 ).