bumped chunky_png to 0.12.0 and updated specs accordingly

Gemfile

@@ -11,7 +11,7 @@ gem "haml", "~> 3.1.0.alpha"
 gem "rcov"
 gem "rubyzip"
 gem "livereload"
-gem "chunky_png", "~> 0.10.1"
+gem "chunky_png", "~> 0.12.0"
 
 gem "ruby-prof" unless RUBY_PLATFORM == "java"
 

compass.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |gemspec|
   gemspec.summary = %q{A Real Stylesheet Framework}
 
   gemspec.add_dependency 'sass', '>= 3.1.0.alpha.50'
-  gemspec.add_dependency 'chunky_png', '~> 0.10.3'
+  gemspec.add_dependency 'chunky_png', '~> 0.12.0'
 
   gemspec.files = %w(README.markdown LICENSE.markdown VERSION.yml Rakefile)
   gemspec.files += Dir.glob("bin/*")

spec/sprites_spec.rb

@@ -62,7 +62,7 @@ describe Compass::Sprites do
       }
     CSS
     image_size('squares-*.png').should == [20, 30]
-    image_md5('squares-*.png').should == 'e8cd71d546aae6951ea44cb01af35820'
+    image_md5('squares-*.png').should == 'fcc93d7b279c2ad6898fbca49cbd01e1'
   end
 
   it "should generate sprite classes with dimensions" do
@@ -285,7 +285,7 @@ describe Compass::Sprites do
       }
     CSS
     image_size('squares-*.png').should == [20, 30]
-    image_md5('squares-*.png').should == 'b61700e6d402d9df5f3820b73479f371'
+    image_md5('squares-*.png').should == '652b67f5e9092520d6f26caae7e18012'
   end
   
   it "should use position adjustments in mixins" do
@@ -323,7 +323,7 @@ describe Compass::Sprites do
       }
     CSS
     image_size('squares-*.png').should == [20, 30]
-    image_md5('squares-*.png').should == 'b61700e6d402d9df5f3820b73479f371'
+    image_md5('squares-*.png').should == '652b67f5e9092520d6f26caae7e18012'
   end
   
   it "should repeat the image" do
@@ -346,7 +346,7 @@ describe Compass::Sprites do
       }
     CSS
     image_size('squares-*.png').should == [20, 30]
-    image_md5('squares-*.png').should == '0187306f3858136feee87d3017e7f307'
+    image_md5('squares-*.png').should == '94abae8440f1b58617f52920b70aaed2'
   end
 
   it "should allow the position of a sprite to be specified in absolute pixels" do
@@ -370,7 +370,7 @@ describe Compass::Sprites do
       }
     CSS
     image_size('squares-*.png').should == [30, 30]
-    image_md5('squares-*.png').should == '262766d3e342f72b052f5708da6a1bf3'
+    image_md5('squares-*.png').should == '2fb19ef9c83018c93c6f147af3a56cb2'
   end
   
   it "should provide a nice errors for lemonade's old users" do