Replaced pylibsass with libsass-python for prebuild wheel binaries on windows

modules/sassassets.py

@@ -2,7 +2,7 @@
 
 import os
 import codecs
-from pylibsass import sass
+import sass
 
 from verdandi.mixins.messagemixin import MessageMixin
 from verdandi.mixins.rendermixin import RenderMixin
@@ -41,7 +41,7 @@ class SassAssets(MessageMixin, RenderMixin, AssetsMixin):
 		os.chdir(source_dir)
 
 		sass_string = sass_file.read()
-		css_string = sass.compile_str(sass_string)
+		css_string = sass.compile(string=sass_string)
 		css_file.write(css_string)
 
 		os.chdir(original_dir)

requirements.txt

@@ -1,11 +1,11 @@
-argh==0.26.1
-Jinja2==2.7.3
-Markdown==2.6
+argh==0.26.2
+Jinja2==2.8
+libsass==0.11.2
+Markdown==2.6.7
 MarkupSafe==0.23
 pathtools==0.1.2
-Pillow==3.1.0
-pylibsass==0.1.4
-python-dateutil==2.4.2
-PyYAML==3.11
+Pillow==3.4.2
+python-dateutil==2.6.0
+PyYAML==3.12
 six==1.10.0
 watchdog==0.8.3