old_contents: """ Filter to remove whitespace from input CSS """
  
  from __future__ import absolute_import
  
  import re
  
  from compress.filter_base import FilterBase
  
  class MollyCSSFilter(FilterBase):
      _COMMENT_RE = re.compile(r'/\*.*?\*/')
      _WHITESPACE_RE = re.compile(r'[ \t\n\r]+')
      def compress_css(self, css):
          css = self._COMMENT_RE.sub('', css)
          css = self._WHITESPACE_RE.sub(' ', css)
          return css.strip()
  
new_contents: """ Filter to remove whitespace from input CSS """
  
  from __future__ import absolute_import
  
  import re
  
  from pipeline.compressors import CompressorBase
  
  class MollyCSSFilter(CompressorBase):
      
      _COMMENT_RE = re.compile(r'/\*.*?\*/')
      _WHITESPACE_RE = re.compile(r'[ \t\n\r]+')
      
      def compress_css(self, css):
          css = self._COMMENT_RE.sub('', css)
          css = self._WHITESPACE_RE.sub(' ', css)
          return css.strip()
  
subject: Change Molly custom compressor to inherit from Pipeline's base compressor, not Django-compress's any more