Its currently not very user friendly having the .sublime-settings files have case-sensitive keys.
It would be nice if the above two are equivalent. If the user defines the settings key "Testsetting" instead of "TestSetting" - it would be nice if it would still load the setting and not give error.
It seems it is done this way because of the Python case-sensitive dictionary class - but it can be subclassed easily to make it case-insensitive.
http://stackoverflow.com/questions/2082 ... dictionary