Quicksilver Silhouette

New features

• Assertion.Builder<Iterable<E>>withFirst
• Assertion.Builder<Iterable<E>>withFirst(predicate)
• Assertion.Builder<Iterable<E>>withLast
• Assertion.Builder<Iterable<E>>withElementAt
• Assertion.Builder<Map<K, V>>withValue
• Assertion.Builder<CapturingSlot<T>>withCaptured in strikt-mockk.