exclude multiple fields inline

[pabhinaya]

@mcclayton , For derived views with multiple included views, ability to exclude multiple fields inline.

[philipqnguyen]

@pabhinaya this is a great addition! Would you add a test for exclude_fields?

[mcclayton]

Yes thank you so much for your contribution. As Philip pointed out, it'd be great if you wouldn't mind adding a test to view_spec.rb similar to: https://github.com/procore/blueprinter/blob/master/spec/units/view_spec.rb#L15-L23
and then I can handle drafting up the release/version bump/CHANGELOG entry.

[pabhinaya]

@philipqnguyen, @mcclayton I have added the specs for exclude_fields. Please proceed.

[ritikesh]

I believe exclude should be able to take 1 or more arguments. Both the below examples should be valid usages of exclude:

exclude :field1

exclude :field1, :field2

This should be possible with Ruby's splat operator.

[philipqnguyen]

@ritikesh normally I would agree with your suggestion too, but I think having plural excludes would fit with current patterns: ie.,field for single and fields for multiple fields.

[mcclayton]

I'll draft a release for this after this is merged if this looks good to @philipqnguyen