Fix for Profile Options not Fully Merging

[jayclassless]

When setting up custom profile.yaml files for my projects, I found that the options I was setting for pylint weren't being respected. After some digging, I found that the merging functionality didn't seem to do what it needed to do in order to carry my options over.

The tests around profiles and merging still pass (after modifying one due to removing some functionality in _merge_dict), and my custom profiles are now working as expected. But, you may want to poke at this a bit more to see if I missed something.

[coveralls]

Coverage decreased (-0.06%) when pulling 389e3e2 on jayclassless:profile_merge_fixes into 1d67804 on landscapeio:master.

[carlio]

I can't quite remember the logic for the dict1_priority stuff, but I guess it was used. Could you add a test case (even just a failing one) to show the problem you're seeing?

[coveralls]

Coverage increased (+1.38%) when pulling 8e1dff7 on jayclassless:profile_merge_fixes into 1d67804 on landscapeio:master.

[jayclassless]

I added a test case. It runs through loading a standard profile, loading a custom profile, and then merging the two. When run on the master branch, this test case fails, as merged_profile contains the pylint options from the standard profile instead of the custom one.

[carlio]

I ended up rewriting most of how profiles work, so I think your inheritance issue will now be solved.

Or worse, but I hope solved.