4.2.3

1. update Issue template
2. fix pom file generation on jitpack #1487
3. fix issue where save(DatabaseWrapper) would leave open insert or update statment. #1496
4. Allow (but still warn) about autoincrementing ids being null. if null, they are treated as if they are 0 meaning that they will get inserted rather than updated in the DB during a save operation. #1490
5. Update warning on wrong type passed in operator class for value #1488