Do not rely on the "loader", so as to not have a dependency on ability to update PHP's include path at runtime.
Use version_compare for better version comparison.
Version bump: 2.2.0
Squashed commit of the following:

commit b89b9e387721bf808f2547412e893bc2df7693d2
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 08:20:10 2014 +0000

    Clarify our intentions.

commit 5db3218be1beb1504586044c9462628247dccbc9
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 07:55:05 2014 +0000

    Restore registering Minify's loader.

commit 429bd68d0410f1a183d8acdeb6bbeb55db7ad634
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 07:48:58 2014 +0000

    Version bump 2.2.0.

commit 4acfc35156e3464ee01ddad4ea0ec3bccd5f74f1
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 07:46:07 2014 +0000

    Enable URL prepending for {stylesheet= assets.

commit e21ef12e11c605f9449082373f10329466dbe2df
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 07:45:04 2014 +0000

    Automatically set the CSS prepend URL for remote files.

commit fc35d643ce403b59834e519c351aae0029ba55cc
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 06:21:42 2014 +0000

    Only reset variables we are certain exist.

commit ef4e75df8d35261b3b7b0e80900f71ae7dbc05c8
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 06:17:43 2014 +0000

    Break apart stylesheet and remote statements, even though for the time being they remain identical.

commit 7af9fcc8e5a0fd2a0fb37d7fc5f7ecfb2428d61a
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 06:16:20 2014 +0000

    Refactor so that on each loop we reset the parameters to be passed to _minify().

commit 97041011d1145e779a7ab38e8ad2f5a540185b11
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 06:06:46 2014 +0000

    Refactor remote fetching into a helper method.

commit 416adad70184c0b54d3590876ad8473270ce122c
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 05:50:53 2014 +0000

    Housecleaning only. Alpha order properties, change some to private. Add comments & debug info.

commit f869fcb09ec67eb515ba91cc3c99b3cb2c687c25
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 05:42:57 2014 +0000

    Upgrade Minify 2.1.7, fixing a severe vulnerability.

commit d25f3a3123a7a51face27a38b6dbabfbe4e68222
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 05:40:59 2014 +0000

    Refactor how we call from hook and evaluate if we should postpone.

commit ab8e89310a43050b12414a1545f0b7e0aed0f9e5
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 05:31:17 2014 +0000

    Bug fix: reset properties to defaults after calling display() each time.

commit c244f4804f30347c301fcad041a9ae38eb1b3d58
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 04:55:37 2014 +0000

    Bug fix: a remote, relative protocol url might sanitise into a cache filename with a leading period.

commit ee4f79ad433994de231b5042a7b913e27bbf0405
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 04:53:52 2014 +0000

    Do not rely on the "loader", so as to not have a dependency on ability to update PHP's include path at runtime.

commit 1ba574ff61caf04700b924b46bf836248520836c
Author: John D Wells <johndwells@gmail.com>
Date:   Sat Feb 8 04:50:22 2014 +0000

    User version_compare for better comparison.
Merge branch 'version2' of github.com:johndwells/Minimee into version2

Conflicts:
	system/expressionengine/third_party/minimee/config.php