Update changelog

Author: netomi

CHANGELOG.md

@@ -5,16 +5,16 @@
 First release of the sudoku trainer desktop application.
 In this first release the following features are supported:
 
- * display of different sudoku grids (classical 9x9, 6x6, 4x4, jigsaw)
- * display of pencil marks (either computer or manual)
- * logical solving techniques with graphical display:
-  * singles (full house, naked & hidden singles)
-  * locked pairs / triples
-  * intersections (pointing / claiming)
-  * hidden pairs / triples / quadruples
-  * naked pairs / triples / quadruples
-  * basic fish (x-wing, swordfish, jellyfish)
-  * single digit patterns (skyscraper, 2 string kite)
-  * uniqueness tests (unique rectangle 1/2/4)
-  * chains (remote pair, x-chain, xy-chain)
- * training library for aforementioned techniques
+ - display of different sudoku grids (classical 9x9, 6x6, 4x4, jigsaw)
+ - display of pencil marks (either computer or manual)
+ - logical solving techniques with graphical display:
+   - singles (full house, naked & hidden singles)
+   - locked pairs / triples
+   - intersections (pointing / claiming)
+   - hidden pairs / triples / quadruples
+   - naked pairs / triples / quadruples
+   - basic fish (x-wing, swordfish, jellyfish)
+   - single digit patterns (skyscraper, 2 string kite)
+   - uniqueness tests (unique rectangle 1/2/4)
+   - chains (remote pair, x-chain, xy-chain)
+ - training library for aforementioned techniques