KDBX 4 Support

[ajschwieterman]

I cannot open my database file. I get the following error below. I am using KeePassXC v2.5.3 with a MasterPassword to open the file, and the database format is KDBX 4.0. It doesn't seem like the API supports KDBX 4.0.

java.lang.NullPointerException at de.slackspace.openkeepass.domain.CrsAlgorithm.getIntValue(CrsAlgorithm.java:21) at de.slackspace.openkeepass.domain.KeePassHeader.getInnerRandomStreamId(KeePassHeader.java:304) at de.slackspace.openkeepass.domain.KeePassHeader.getValue(KeePassHeader.java:291) at de.slackspace.openkeepass.domain.KeePassHeader.getHeaderSize(KeePassHeader.java:413) at de.slackspace.openkeepass.api.KeePassDatabaseReader.decryptStream(KeePassDatabaseReader.java:114) at de.slackspace.openkeepass.api.KeePassDatabaseReader.decryptAndParseDatabase(KeePassDatabaseReader.java:38) at de.slackspace.openkeepass.KeePassDatabase.openDatabase(KeePassDatabase.java:165)