Don't render blank blocks
Some tests for whitespace collapsing
More tests for whitespace collapsing
Clean up whitespace collapsing a bit
Cycle tags are never blank
Clean up whitespace collapsing
Merge branch 'master' into dont_render_blank_blocks

Conflicts:
	lib/liquid/tags/cycle.rb
	lib/liquid/tags/increment.rb
Make sure include tags are never blank
Merge branch 'master' into dont_render_blank_blocks

Conflicts:
	lib/liquid/tag.rb
Add blank test for case tags
Merge pull request #218 from Shopify/dont_render_blank_blocks

Dont render blank blocks