Java8 compatibility, dependencies

[gewy]

Hi,
I am still using Java8 (openJDK) for some reasons and found that only to changes are necessary :

• cz/smarteon/loxone/LoxoneCrypto.java
  // final Cipher cipher = Cipher.getInstance("AES/CBC/ZeroBytePadding");
  final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
• cz/smarteon/loxone/message/EncryptedCommand.java
  // return URLEncoder.encode(toEncode, StandardCharsets.UTF_8);
  return URLEncoder.encode(toEncode, "UTF-8");

Is there any other reasons to not be compatible with Java8 ? Or these incompatibilities are linked to openJDK ?
And thanks a lot for your great job. I will certainly used it a lot and make some more feedback.