refactor: Move binary installation to it's own crate

[drager]

This PR intends to fix #384.

[ashleygwilliams]

hey @drager looks like this needs a rebase- i've been holding off reviewing because it says WIP- what's the status here? would love to get this merged soon!

[drager]

@ashleygwilliams Status is that I'm having some problems with cargo workspaces for the tests. Running cargo test results in some failures because of the workspaces. I get the following output that makes the tests fail: current package believes it's in a workspace when it's not.

However, if I remove the [workspace] section the tests pass...

I'm hoping to resolve this as soon as possible and then add some tests for the functions in the binary_installation crate.

[drager]

@ashleygwilliams: I have now resolved the issue with workspaces and I added some tests for the path functions as well.

I suppose you could review the code I have pushed now. However, I think some more tests could be added. Please let me know what you think. 😊

[fitzgen]

@drager heads up: if you rebase, then appveyor CI should be fixed 👍

[drager]

@fitzgen: Thank you! 😊

[ashleygwilliams]

will work on fixing the merge conflict- this looks good to me! thanks so much!

[drager]

@ashleygwilliams Merge conflicts should now be solved! 🎉

[ashleygwilliams]

ack- i triaged in the wrong order today and looks like they are back :( i'm sorry, i'll be sure to get this in today

[drager]

No worries, give me a few minutes and I will resolve them again.

[drager]

Now it should be good to go.

[ashleygwilliams]

🎉 🎉 🎉 🎉 🎉 🎉 🎉 🎉