Update dependency mrclay/minify to v3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
mrclay/minify	require	major	2.3.* -> 3.0.*	homepage, source

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Release Notes

mrclay/minify

### [`v3.0.3`](https://togithub.com/mrclay/minify/blob/master/CHANGELOG.md#Version-303-2017-11-03) [Compare Source](https://togithub.com/mrclay/minify/compare/3.0.2...3.0.3) - Fix closure-compiler's error "redirection limit reached". [#​618](https://togithub.com/mrclay/minify/issues/618), [#​619](https://togithub.com/mrclay/minify/issues/619) ### [`v3.0.2`](https://togithub.com/mrclay/minify/blob/master/CHANGELOG.md#Version-302-2017-09-14) [Compare Source](https://togithub.com/mrclay/minify/compare/3.0.1...3.0.2) - Fixes syntax error in Groups controller, [#​613](https://togithub.com/mrclay/minify/issues/613) - Better-maintained lessphp fork, [#​610](https://togithub.com/mrclay/minify/issues/610) - No longer corrupts some chars in some environments, [#​608](https://togithub.com/mrclay/minify/issues/608) ### [`v3.0.1`](https://togithub.com/mrclay/minify/blob/master/CHANGELOG.md#Version-301-2017-06-09) [Compare Source](https://togithub.com/mrclay/minify/compare/3.0.0...3.0.1) - Update CSSmin to v4, [#​599](https://togithub.com/mrclay/minify/issues/599), [#​590](https://togithub.com/mrclay/minify/issues/590) ### [`v3.0.0`](https://togithub.com/mrclay/minify/blob/master/CHANGELOG.md#Version-300-2017-04-03) [Compare Source](https://togithub.com/mrclay/minify/compare/2.3.3...3.0.0) - Improved CSS minification via Túbal Martín's CSSMin - Easier error identification (just see error_log) - Adds feature to serve static files directly - Adds config option for simply concatenating files - Adds config option for altering creation of Minify/MinApp objects - Missing spec no longer redirects, instead links to docs - Installation requires use of Composer to install dependencies - Minify::VERSION is an int that tracks the major version number - BREAKING: The project root is now what gets deployed as `min` - BREAKING: Removes JSMin - BREAKING: Removes JSMin+ (unmaintained, high memory usage) - BREAKING: Removes DooDigestAuth - BREAKING: Removes Minify_Loader (uses Composer) - BREAKING: Removes Minify_Logger (uses Monolog) - BREAKING: Removes `$min_libPath` option - BREAKING: The Minify, source, and controller components have changed APIs

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