Updating: some minor fixes
Updating: improving ATS2TUTORIAL
Updating: improving ATS2TUTORIAL
Updating: minor and miscellaneous
Updating: working doc/PROJECT/SMALL/gtkcairotimer
Updating: minorly improving level-2 jsonizing
Updating: minorly reorganizing gtkcairtimer
Updating: improving ATS2TUTORIAL
Updating: miscellaneous
Updating: minorly improving
Updating: very minorly improving
Updating: fixing level-4 error handling
Merge branch 'master' into translate_ja