Version release changes. Which files to target?

In SukakuFrame.java

313: Sudoku to Sukaku

In Settings.java

19: .1.5 to .1.6 (or most recent version)

Also look at:

    public final static int VERSION = 1;
    public final static int REVISION = 2;
    public final static String SUBREV = ".1.6";

In Aboutdialog.java

44: this.setTitle("Sudoku Explainer - About"); to Sukaku
69: 2007 to 2019 (current year)
72: Sudoku to Sukaku
94: Licence informaion

In Welcome.html

3: Sudoku to Sukaku

In serate.java

15: public class serate { (Version and man document updated)

In SukakuExplainer.html

May require update (similar to serate.java)

In Read.md.html

General release changes (look at man document too)