Revert "Issue #4: Convert normalized tags to all-lowercase"

This reverts commit 433d5c3aebcef6b63ab900731d961804913cd5e9.
Merge branch 'issue5'
Issue #5: Convert normalized tags to all-lowercase

Signed-off-by: Sascha Rudolph <sascha.rudolph@sophos.com>
Issue #5: Convert normalized tags to all-lowercase

  * re-minified version

Signed-off-by: Sascha Rudolph <sascharenerudolph@gmail.com>