3.0.0

• Changed minimum deployment targets to iOS 15 and macOS 12
• Changed Masterkey.createFromRaw(rawKey:) to throw CryptoError.invalidParameter when the raw key isn't 64 bytes
• Removed Base32 package dependency in favor of Data(base32Encoded:) and Data.base32EncodedString(), which decode like Java's Guava base32()
• Removed options param from Data(base64UrlEncoded:) and base64UrlEncodedString(), and changed decoding to match Java's Guava base64Url()
• Changed MasterkeyFile to throw instead of crashing on malformed input, and to reject scrypt parameters that aren't a power of 2 or would exceed the memory limit
• Changed GCM authentication failures to throw CryptoError.unauthenticCiphertext
• Changed key material handling to wipe every in-memory copy after use
• Fixed crash in calculateCleartextSize(_:) for negative ciphertext sizes