Update omnisharp

[akurtakov]

Most interesting is OmniSharp/omnisharp-node-client@bdf5757 which updates roslyn and contains a number of changes.

[mickaelistria]

IIRC, there were some hacks I did set up on Omnisharp-node-client to work with Eclipse IDE. I'll have to diff code and see what I did change before we can upgrade smoothly.
But in any case, omnisharp-node-client should be considered as deprecated, and we're waiting for OmniSharp/omnisharp-roslyn#576 to have progress to adopt it ASAP.

[mickaelistria]

Tried something at https://github.com/mickaelistria/aCute/tree/fetch-ls , but found another blocker: recent version of OmniSharp seems failing on mono: OmniSharp/omnisharp-atom#993

[mickaelistria]

I managed to get a newer Omnisharp working on Travis, but this seems to require mono >= 4.8 (see https://github.com/OmniSharp/omnisharp-roslyn README) whereas Fedora 25 ships mono 4.4 as latest version. So I'm not sure upgrading right now is desired.
@akurtakov thoughts?

[akurtakov]

Feodra 26 has 4.8 so as soon as it's out I would say push it. https://fedoraproject.org/wiki/Releases/26/Schedule

[mickaelistria]

With https://github.com/mickaelistria/aCute/pull/34 , we'll move to omnisharp-node-client v0.7.0

[mickaelistria]

Updated to 7.0.7 with mickaelistria@84dec48