Initial github import of liquid

• CHANGELOG
• MIT-LICENSE
• Manifest.txt
• README
• Rakefile
• example/server/example_servlet.rb
• example/server/liquid_servlet.rb
• example/server/server.rb
• example/server/templates/index.liquid
• example/server/templates/products.liquid
• init.rb
• lib/extras/liquid_view.rb
• lib/liquid.rb
• lib/liquid/block.rb
• lib/liquid/condition.rb
• lib/liquid/context.rb
• lib/liquid/document.rb
• lib/liquid/drop.rb
• lib/liquid/errors.rb
• lib/liquid/extensions.rb
• lib/liquid/file_system.rb
• lib/liquid/htmltags.rb
• lib/liquid/module_ex.rb
• lib/liquid/standardfilters.rb
• lib/liquid/strainer.rb
• lib/liquid/tag.rb
• lib/liquid/tags/assign.rb
• lib/liquid/tags/capture.rb
• lib/liquid/tags/case.rb
• lib/liquid/tags/comment.rb
• lib/liquid/tags/cycle.rb
• lib/liquid/tags/for.rb
• lib/liquid/tags/if.rb
• lib/liquid/tags/ifchanged.rb
• lib/liquid/tags/include.rb
• lib/liquid/tags/unless.rb
• lib/liquid/template.rb
• lib/liquid/variable.rb
• test/block_test.rb
• test/condition_test.rb
• test/context_test.rb
• test/drop_test.rb
• test/error_handling_test.rb
• test/extra/breakpoint.rb
• test/extra/caller.rb
• test/file_system_test.rb
• test/filter_test.rb
• test/helper.rb
• test/html_tag_test.rb
• test/if_else_test.rb
• test/include_tag_test.rb
• test/module_ex_test.rb
• test/output_test.rb
• test/parsing_quirks_test.rb
• test/regexp_test.rb
• test/security_test.rb
• test/standard_filter_test.rb
• test/standard_tag_test.rb
• test/statements_test.rb
• test/strainer_test.rb
• test/template_test.rb
• test/test_helper.rb
• test/unless_else_test.rb
• test/variable_test.rb