Homebrew now at version 0.7

Changes in this version include:
* Aliases are now defined by relative symlinks rather than in the
  formulae themselves. Many commands are faster now that they don't
  have to read every formula to find aliases.

* "url" now supports the same features as "head", including ":using"
  and version specifiers for VCS systems.

* Files and methods marked for deprecation in 0.7 have been removed.

* The Formula DSL now supports "skip_clean :all" and "keg_only 'reason'"

Library/Homebrew/global.rb

@@ -5,7 +5,7 @@ require 'utils'
 
 ARGV.extend(HomebrewArgvExtension)
 
-HOMEBREW_VERSION = 0.6
+HOMEBREW_VERSION = 0.7
 HOMEBREW_WWW = 'http://mxcl.github.com/homebrew/'
 
 if Process.uid == 0