Version 2.1.3 (2009-06-30)

• CSS fixes
• A few URI rewriting bugs fixed
• comment/whitespace removal no longer breaks some values
• IE6 pseudo-element selector bug no longer triggered
• HTTP fixes
• Proper Expires handling in webkit (dropped "must-revalidate", which triggered a webkit bug)
• ETag generation now valid (must be unique when gzipped)
• Vary header always sent when Accept-Encoding is sniffed
• Dropped deflate encoding, since browser and proxy support could be buggy.
• File cache now works w/o setting $min_cachePath
• No more 5.3 deprecation warnings: split() removed
• API: Can set contentType Minify_Source objects (fixes an annoying caveat)
• Resolved Issue list

Version 2.1.2 (2009-03-04)

• Javascript fixes
• Debug mode no longer confused by */* in strings/RegExps (jQuery)
• quote characters inside RegExp literals no longer cause exception
• files ending in single-line comments no longer cause code loss
• CSS: data: URLs no longer mangled
• Optional error logging to Firefox's FirePHP extension
• Unit tests to check for common DOCUMENT_ROOT problems
• DOCUMENT_ROOT no longer overwritten on IIS servers
• Builder app doesn't fail on systems without gzdeflate()
• APC caching class included

Version 2.1.1 (2008-10-19)

• Bug fix release
• Detection and workarounds for zlib.output_compression and non-PHP encoding modules
• Zlib not required (mod_rewrite, et.al., can still be used for encoding)
• HTML : More IE conditional comments preserved
• Minify_groupUri() utility fixed

Version 2.1.0 (2008-09-18)

• "min" default application for quick deployment
• Minify URI Builder app & bookmarklet for quickly creating minify URIs
• Relative URIs in CSS file are fixed automatically by default
• "debug" mode for revealing original line #s in combined files
• Better IIS support
• Improved minifier classes:
• JS: preserves IE conditional comments
• CSS: smaller output, preserves more hacks and valid CSS syntax, shorter line lengths, other bug fixes
• HTML: smaller output, shorter line lengths, other bug fixes
• Default Cache-Control: max-age of 30 minutes
• Conditional GETs supported even when max-age sent
• Experimental memcache cache class (default is files)
• Minify_Cache_File has flock()s (by default)
• Workaround for Windows mtime reporting bug

Version 2.0.0 (2008-05-22)

• Complete code overhaul. Minify is now a PEAR-style class and toolkit for building customized minifying file servers.
• Content-Encoding: deflate/gzip/compress, based on request headers
• Expanded CSS and HTML minifiers with test cases
• Easily plug-in 3rd-party minifiers (like Packer)
• Plug-able front end controller allows changing the way files are chosen
• Compression & encoding modules lazy-loaded as needed (304 responses use minimal code)
• Separate utility classes for HTTP encoding and cache control

Version 1.0.1 (2007-05-05)

• Fixed various problems resolving pathnames when hosted on an NFS mount.
• Fixed 'undefined constant' notice.
• Replaced old JSMin library with a much faster custom implementation.

Version 1.0.0 (2007-05-02)

• First release.