ENHANCEMENT Changed Requirements::$customHeader to array storage with uniquenessID
FEATURE Added Requirements::clear_combined_files()
ENHANCEMENT Extended unit test coverage for Requirements
MINOR Documentation in Requirements
MINOR Changed Requirements::$files_to_combine to Requirements::$combine_files
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@58347 467b73ca-7a2a-4603-9d3b-597d59a354a9