Internally renamed property/value aliases to declaration aliases.
Removed the Core.php include out of the auto loader til 2.x since it doesn't really fit now.
Moved proc API functions and formatter functions into their own files for including via CssCrush::init().
Fix for flex-order 'natural number' confusion in legacy-flexbox plugin.
Converted changelog to markdown for github friendliness.
Moved core files into a vendor named directory for PSR-0 compliance.
Moved license and version out of the bootstrap file.