Updated changelog

Author: ODiogoSilva

CHANGELOG.md

@@ -3,6 +3,8 @@
 ## Changes since v0.4.3:
 
 ### New features:
-* Allow the program to draw the `.svg` plots only on gray scale
+* Allow the program to draw the `.svg` plots only on gray scale (with '-bw' option)
+* Allow the program to show individual label names even when population information is provided (with '--show-ind-labels' option)
 
 ### Bug fixes:
+* Fixed Qvalue sorting when proving an ind file with two columns