New features

• When associatedtype has constraints, mock class becomes generic by @sidepelican in https://github.com/uber/mockolo/pull/294

/// @mockable
protocol Foo {
    associatedtype T: StringProtocol
}

// before
class FooMock: Foo {
    typealias T = StringProtocol // 🤪 StringProtocol is not conforms to StringProtocol. Protocols don't conform to itself.
    init() { }
}

// after
class FooMock<T: StringProtocol>: Foo {
    init() { }
}

Fix bugs

• Avoid Special Handling of the "Unknown" Type Name by @sidepelican in https://github.com/uber/mockolo/pull/299
• Remove metadata from NominalModel, resulting correct Rx SubjectType in mock's init. by @sidepelican in https://github.com/uber/mockolo/pull/292

Maintenances

• Use @Fixture in VarTests by @sidepelican in https://github.com/uber/mockolo/pull/291
• Use @Fixture in Rx Tests and remove use-mock-observable flag by @fummicc1 in https://github.com/uber/mockolo/pull/297
• Remove cast property from SwiftType by @sidepelican in https://github.com/uber/mockolo/pull/300