Change widget pipe to widget class
Return a piece of html
Add docstring
Remove unused file
Fixed bug about encoding
Merge branch 'DataProcessorServer' into html_class #41

Conflicts:
	bin/execute_all_test
Bug fixed.
Bug fixes and s/Runtimeerror/DataProcessorError/g
Fix comments
Import a test for `_TableData` from @marubu commit
Merge branch 'DataProcessorServer' into html_class
Add a body API
Fix error check
Correct format and add docstring in #42 change.
Add docstring and error handing
Add docstring to table.py. #41
Merge pull request #41.
Merge pull request #42.