Added an option to set the starting index, useful to mitigate conflicts with
third-party CSS files.
Performance improvements, including O(1) lookup of cached values rather than
O(n), aborting PostCSS walk altogether when a negative index is found, and
not running an optimize step if there are no z-index declarations.
2.1.1
Fixes an issue where all positive indices before a negative index were
transformed (thanks to @niccai).
2.1.0
Now aborts early when encountering negative indices, making the transform
safer overall.
2.0.1
Improved performance of the module by sorting/deduplicating values in one pass
instead of per-value (thanks to @pgilad).
2.0.0
Upgraded to PostCSS 5.
1.1.3
Improved performance by iterating the AST in a single pass and caching nodes for the second iteration.
1.1.2
Documentation/metadata tweaks for plugin guidelines compatibility.
1.1.1
Corrected dependency tree when installing from npm.