Added test suite; renamed skin_save variable to skin_cache; added skin_directory variable; added skin_clear_cache function; moved from managed to unmanaged storage of skin files.
Added conversion to absolute URLs for images, links, forms, etc, which was forgotten in the D7 upgrade.
Fixed bug causing URLs to not include the base path; fixed bug where CSS paths including '../' weren't resolving properly.
Fixed bug which wasn't detecting non-absolute URLs.
Stripping CVS keywords
Skipped resolving imports and paths for JS files; only CSS files need it.
Resolved imports and paths when saving non-optimized files.
#950626 by toomanypets: Fixed bug which occurred when viewing cached pages.
Delete variables when uninstalling.
# by [toomanypets] Better documentation.
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