Open reasons of class
Because we have chosen IDEA comes with the Java SDK, Java comes with the current version is 11, we need to change the cost of the SDK. Specific see how the picture below.
Release problems
Because when you change the version in some places down, and caused a total of the following areas, listed. Not necessarily all parts must be changed, but that a certain right.
This is the sixth may have some, some do not.
