2.0.0 RC1

[tpendragon]

Update dry-struct, remove ActiveFedora as a dependency, and remove deprecations.

[tpendragon]

@awead @Cam156 I wonder if you can take a look at this?
@ojlyytinen I don't know if you're still benchmarking things, but it'd be interesting to compare this branch.

[awead]

@tpendragon do you want me to run CHO against this branch or do you need benchmarks?

[tpendragon]

@tpendragon do you want me to run CHO against this branch or do you need benchmarks?

@awead If you can get Cho running on it, that'd be awesome. It'd probably be easier to go to 1.3 first - a bunch of deprecation warnings make the upgrade much easier.

[tpendragon]

https://gist.github.com/tpendragon/81ce9c47a381b6ff864ff760312064e5 My benchmarks. Everything seems to be within the standard deviation - no changes one way or the other.

[awead]

@tpendragon 1.4 works fine. But, when I try this RC branch, I'm getting:

> Valkyrie::Types::Set.member
NoMethodError: undefined method `member' for #<Dry::Types::Default:0x007fe4a8aa1ee8>
from /Users/agw13/.asdf/installs/ruby/2.4.1/lib/ruby/gems/2.4.0/gems/dry-types-0.13.4/lib/dry/types/decorator.rb:77:in `method_missing'

To put that in context, we're doing this: https://github.com/psu-libraries/cho/blob/master/app/cho/work/with_use_type.rb#L27

[awead]

@tpendragon Ok, unstuck after changing member to of. Apparently, there was a deprecation warning previously for this method, which I do actually remember addressing, but for some reason it wasn't catching this line. I can run the test suite, and it's got some errors. I'll see what I can find out.