Refactored Errors -- ParseError and Err
[Extractors] Removed liftToContent
Added general Parser type
[Extractors2] Added attribute
[Err] Added
[Result] Added
[Extractors] Split Error to Err and ParseErr. Using ResultT instead of ErrorT
[Example] Improved
cleanup
Err => ShowErr
[Extra] added
[Extractors] cleanup
[Example] cleanup
.
Added xml data files
Merge branch 'refactor1'
[xml-extractors] Updated cabal file