Simplify `equal` matcher for `[T?]`
Simplify `equal` matcher for `[T?]`

Let's utilize Array and Optional's conditional conformances for Equatable.

phatblat/Nimble,AnthonyMDev/Nimble,twobitlabs/Nimble,AnthonyMDev/Nimble,Quick/Nimble,twobitlabs/Nimble,phatblat/Nimble,Quick/Nimble,phatblat/Nimble,twobitlabs/Nimble,AnthonyMDev/Nimble,Quick/Nimble