I want to update from 3.3.2 to 3.4.1 but the TwentyEleven theme has changed and I don't want to break anything, since I use a child theme that is based on it.
What is the best way to compare the old/new versions of the theme to see what has changed and to test it.
I thought of manually downloading the new version of WordPress and to compare the files in the theme (using WinMerge or similar to show the file differences.
I could also copy the existing TwentyEleven theme and link my child to it, then point my child theme to the new version having upgraded to see if everything works.
Is there a better recommended process that I could follow?