### OpenVPN
- Make CPassepartoutCryptoOpenSSL agnostic of PassepartoutKit
- Move Allocation/ZeroingData from PassepartoutKit to package for
internal use
- Rename ZeroingData.count to .length for consistency with NSData
- Duplicate some Data manipulation code in CryptoOpenSSL
- Retain a simplified version of ZeroingData in PassepartoutKit
(AutoerasingData)
### WireGuard
- Make WireGuardKit imports `internal`