Make environment-specific server configurations fully override the default one.

[sangaline]

This would change the behavior of the configuration merging to allow for shorter lists of servers to completely override a longer set of defaults. Further discussion can be found in #137.

[timkelty]

@sangaline Thanks for the PR! - I ended up grabbing your test, but I decided to just use _.assign instead of making an exception for servers.

[sangaline]

Thanks!

[timkelty]

@sangaline It seems a lot of people were actually relying on this type of merge, so it really should have been published as a breaking change.

So, I reverted the change with a patch (1.5.2), and re-released it as (2.0.0).

[twalling]

I know this is closed but I'm a little surprised at the drastic change in how configs were merged. This requires existing users to rewrite configs if they want to upgrade. This just bit me for a little while and I'd suggest an addition to the README near the top calling out the change from _.merge to _.assign.

[timkelty]

@twalling sorry about that.
For that reason it was published as a major version change, but yes - a note in the Readme is certainly warranted.

It's on my list to add, also happy to accept a PR.