Support for netcore / netstandard1.6

[adamchester]

Fixes #1 by adding Support for netcore / netstandard1.6

In this PR, I have reworked the commit history from:

• Merge master --> netcore #137
• https://github.com/haf/expecto/tree/adamchester-netcore
• https://github.com/haf/expecto/tree/netcore

in order to allow merging into master.

See also:

• [WIP] Support netstandard1.6 #123
• Support for netstandard1.6 and .NET Core #101
• Use a Github Project for expecto->netcore #125
• https://github.com/haf/expecto/projects/1#card-2035713

[haf]

Rebuilding. I'm not sure why it hangs sometimes.

[adamchester]

Yeah Travis OSX has been struggling to download mono recently.

[haf]

Nuget merging done?

[adamchester]

Yep, it's done.

[haf]

Can we remove the OS X build on travis to make the build green?

[adamchester]

I think it's a temporary issue, but let me just try restarting that one failing job first...

[haf]

I've tried restarting it many times.

[adamchester]

Yep, I just tried again a few times and no luck. It fails to download mono.

Here are some issues and PRs I have found that appear related:

• Mono on OS-X: Curl regularly dropping out travis-ci/travis-ci#7502
• Dotnet core install on osx sometimes fails travis-ci/travis-ci#7615
• [C#] Retry download on OSX, add new Mono repo layout travis-ci/travis-build#1021

From travis-ci/travis-ci#7615 (comment)

Yeah the underlying issue seems to be with OSX + curl + Azure CDN.

[haf]

Let's add os: osx to

expecto/.travis.yml

Line 32 in b5be96c

allow_failures:

under allowed_failures

[haf]

Excellent, I'll release the nuget in beta later today!